I too enjoy over planning my sailing trips! I think you will find that the vast majority of restaurants on the BVI charter circuit do have their menus online and they look to be reasonably up-to-date. I looked at all the currently open restaurants that I've previously visited, and here are the menus I found online:

Norman
Pirates Bight (http://www.piratesbight.com/menus.htm]

Peter
Willy-T (http://willy-t.com/menu/)

Cooper
Cooper Island Beach Club (http://cooperislandbeachclub.com/cooper-island-beach-club-restaurant/)

Tortola - Penn's Landing
Red Rock Restaurant & Bar (https://www.bviredrock.com/menu/)

Beef Island
Trellis Bay bar & Grill (http://www.trellisbaymarket.com/trellis-bay-bar-and-grill/)

Marina Cay
Pussers - NOT ONLINE

Scrub
Scrub Island Resort (https://www.scrubisland.com/dining/)

Virgin Gorda
CocoMaya (http://cocomayarestaurant.com/food-and-drink/)
Leverick Bay (https://www.leverickbayvg.com/therestaurant/)
Oil Nut Bay (https://www.oilnutbay.com/experience/beach-club-restaurant/)
Top of the Baths (https://h2otrips.com/destinations/c...-gorda-british-virgin-island-restaurant/) - MAY NOT BE UP TO DATE
Hog Heaven - NOT ONLINE

Anegada
Potter's By The Sea (http://pottersanegada.com/potters_by_the_sea_002.htm )
Wonky Dog (http://www.thewonkydog.com/menu.html)
Neptune's Treasure (http://www.neptunestreasure.com/restaurant/) - NO PRICES
Anegada Beach Club (https://anegadabeachclub.com/dining/)
Big Bamboo (https://bigbambooanegada.com/restaurant.html) - NO PRICES
Flash of Beauty - NOT ONLINE (Burgers/Conch/excellent Rotis)
Cow Wreck Beach Bar - NOT ONLINE
The Lobster Trap - Will send pdf of menu in follow on post

Jost Van Dyke
Foxy's (https://foxysbvi.com/menus/)
Alibaba - NOT ONLINE (excellent local foods!)
Corsairs (http://www.corsairsbvi.com/view-our-menu/)
Hendo's Hideout (https://hendoshideout.com/menus/)
Soggy Dollar Bar (http://www.soggydollar.com/eats)
Ivan's - I don't know if they are serving food
Sydney's Peace & Love - NOT ONLINE
Abe's - NOT ONLINE
Foxy's Taboo - NOT ONLINE
B-Line - NOT ONLINE

Tortola - North Shore
Myetts/Pussers - NOT ONLINE
BananaKeet Café - NOT ONLINE
Sugar Mill Restaurant & Tramonti (http://www.sugarmillhotel.com/restaurants)
Gene's Restaurant - NOT ONLINE
Sebastian's (https://sebastiansbvi.com/seaside-grille/)