(ABC News) -- The ordeal of the disabled Carnival Triumph cruise ship carrying 4,000 passengers and crew appears to be almost over, with relatives waving at passengers on board as the ship approaches port in Mobile, Ala.
The ship was expected to arrive between 9:30 and 10:30 p.m. local time (10:30-11:30 ET). Once the ship was secured in port, passengers would be able to start disembarking within 15 and 30 minutes, a Carnival official said.
"Inside the terminal, there's also warm food available," said the official, Terry Thornton, senior vice president of marketing for the cruise line. "There are blankets, there are cell phones and refreshments available for the guests that need that or want that assistance.
"We're focused completely tonight on our guests and getting them on their journey home," Thornton added.
It could take up to five more hours to get everybody off the huge ship.
"There are some limitations. We know that up front," Thornton said at an earlier news conference this afternoon. "The ship still does not have power. We only have one functioning elevator aboard."
Thornton said that anyone with special needs and children will be the first to get off the boat. He said the company's number one priority is to make the process as "quick, efficient and comfortable" for guests as possible.
"We're not anticipating any additional difficulties," he said.
The passengers were achingly close to port about noon today as the ship began to enter the channel and proceed to the cruise terminal. At 1 p.m., the lead tow boat had a tow gear break, so a spare tug boat that was on standby had to be sent in to replace it.
But once the second tug was in position and the lines were re-set, the towing resumed only briefly before the tow line snapped.
"We had to replace that tow line so the ship did not begin progressing back into the cruise terminal until 2 p.m.," Thornton said
Passengers desperate to get off the vessel waved at media helicopters that flew out to film the ship and passenger Rob Mowlam told ABCNews.com by phone today that most of the passengers on board were "really upbeat and positive."
Nevertheless, when he gets off Mowlam said, "I will probably flush the toilet 10 times just because I can."
Mowlam, 37, got married on board the Triumph Friday and said he and his wife, Stephanie Stevenson, 27, haven't yet thought of redoing the honeymoon other than to say, "It won't be a cruise."
Alabama State Port Authority Director Jimmy Lyons said that with powerless "dead ships" like the Triumph, it is usually safer to bring them in during daylight hours, but, "Once they make the initial effort to come into the channel, there's no turning back."
"There are issues regarding coming into the ship channel and docking at night because the ship has no power and there's safety issues there," Richard Tillman of the Mobile Bay Convention and Visitors Bureau told ABCNews.com.
When asked if the ship could be disembarked in the dark of night, Tillman said, "It is not advised. It would be very unusual."
Thornton denied the rumors that there was a fatality on the ship. He said that there was one illness early on, a dialysis patient, but that passenger was removed from the vessel and transferred to a medical facility.
The U.S. Coast Guard is assisting now and there are multiple generators on board. And customs officials will board the ship while it is being piloted to port to accelerate the embarkation, officials said.
After eight miserable days at sea, the ship's owners have increased the compensation for what some on board are calling the vacation from hell.
Carnival Cruise Ship Delayed by Snapped Tow Line
All 3,143 passengers aboard the 900 foot colossus, which stalled in the Gulf of Mexico after an engine room fire early Sunday, were already being given a full refund for the cruise, transportation expenses and vouchers for a another cruise. Carnival Cruise Lines is now boosting that offer to include another $500 per person. Gerry Cahill, president and CEO of Carnival Cruise Lines, announced the additional compensation Wednesday.
"We know it has been a longer journey back than we anticipated at the beginning of the week under very challenging circumstances," he said in a statement. "We are very sorry for what our guests have had to endure. Therefore, in addition to the full refund and future cruise credit already offered, we have decided to provide this additional compensation."
Carnival also said that it has canceled a dozen planned voyages for the Triumph and acknowledged that the crippled ship had been plagued by other mechanical problems in the weeks before an engine-room fire left it powerless in the Gulf of Mexico.
Passengers have been texting ABC News that sewage is seeping down the walls from burst plumbing pipes, the carpets are wet with urine. Food is in short supply and reports have surfaced of elderly passengers running out of critical heart medicine, and others on board the ship squabbling over scarce food.
ABC News flew over the ship providing the first aerial views of the ship showing curious passengers gathering at the rails, looking up at the ABC News plane. It also seemed from the air that deck chairs had been turned into beds.
"[There are] no showers. The smell's terrible. We are camping on deck," passenger Ann Barlow told ABC News.
Mary Poray, whose 12-year-old daughter Rebekah is traveling on the Triumph, teared up when shown images of the ship's deck.
"I just need to know that she's ok," Poray said. "The worst part was when she said, 'Mommy, I'm afraid I won't ever get to see you again."