Hundreds of cruise ship passengers staged an on-board protest and demanded refunds over "stale food, overflowing toilets and missed stop".
The 2000 passengers paid £5,300 each for the two-week Norwegian Spirit tour, which stops at France, Amsterdam, Norway and Iceland.
Customers were shocked and annoyed when Amsterdam was cut from the trip, supposedly because high winds prevented the vessel from docking.
In a blunder-ridden trip, the boat reportedly stopped at a 'deserted' Norwegian town that was closed to tourists, before a scheduled visit to Iceland was replaced with a trip to Greenock, near Glasgow - reports Mirror Online.
The cruise ship was denied permission to dock in Greenock on Monday, prompting the captain to change course for Belfast.
Passengers were stuck on the ship for three days and claim they were served stale food in the ship's restaurants.
Frustrated customers staged a demonstration in the ship's grand atrium, chanting "shame on you", "get us off this ship" and "we want refunds".
Deena Roland, 48, from Taunton, Devon, told Mail Online : "There are a lot of angry people on this ship and the lack of adequate explanation as to what’s going on almost caused a riot this morning.
"It’s been a nightmare of a holiday, and now many of the toilets in the cabins are overflowing with sewage.
"It’s really not my idea of a luxury cruise break.’
On Monday, many passengers disembarked from the ship when it docked in Belfast, returning to London on their own.
A spokesman for Norwegian Cruise Line told Mail Online: "Norwegian Spirit was forced to cancel her call to Greenock due to weather conditions as well as a delay caused by a departing Navy vessel that experienced a technical malfunction."
The US-based firm refused to provide full refunds, instead offering a 25 per cent discount voucher for other cruises.
