Barge leaves Belize City Tuesday and Friday mornings (iirc). Getting on/off the island is not the problem, it's the new AC restrictions. Depending on the length of your stay, it's nothing a bluenote can't get past
Joking aside... The effort has been strong to restrict/or tax bigtime any new vehicle to the island. Several days a week there are roadblock/checkpoints.
The blue Tahoe pays bigtime for 4-5 off island trips a year.