By the time he's paid camp site fees plus taxi fare there and back to Brewers he can probably get a cheap room in Road Town.

When all I wanted was a bed and a shower, I used to stay at the A & L Inn http://www.ultimatebvi.com/go/A-L-Inn/ right in town with plenty of food and drink options right there. Don't know the price these days but was under $100 last time I stayed 3 years ago.