We just chartered Cool Change, Lagoon 450, TMM for 3 weeks. We ran the AC every night for at least 12-14 hours.
Very hot and humid the first week and we motored a lot since the wind was non existent.
It was about $800. for the 3 weeks in diesel. About $40.00 per night.
Diesel. $4.50 per gallon
Water. .20 per gallon
Ice. $3-5.00 per bag.