I have this vacuum sealer:
https://www.amazon.com/FoodSaver-Automat...+vacuum+sealers
While I wouldn't buy one just for a trip to the BVI's, I do use mine often. We stock up on meats and portion them in 2 portion packets. Plus, I make lots of soup and freeze in vacuum seal bags.
Like others have said, it's not necessary just makes it nice & neat (and eliminates freezer burn if you decide to get things ready a month or so in advance)