All lot depends on where you enter the province. Are you flying in or driving in?
Yes, PEI Lobster Suppers are the best meals out there-with many homemade ingrediants. St. Ann's church was one I visited.
Captain Scott's Fish and Chips were very good, but I was last in PEI over 7 years ago.
Nova Scotia dining depends on where and how you are entering the province-each area has its own specialties. Are you flying into Halifax, or entering the South Shore by way of ferries from Maine?
The easiest description to give is this: The South Shore (Lighthouse Route) has the best lobsters, Digby County has the best scallops, Halifax is the area with the greatest selection of cuisines, the Marine Drive area (Southeastern NS) is best and easiest for freshwater fishing (trout, salmon,etc), the area around Kentville and Truro to the north is Apple country, and Cape Breton has areas that mix in Acadian (French influenced) cuisine. (especially Cheticamp region on west side).
My trip to NS last year was only for 2 days, and was to the South Shore, principally Yarmouth and Shelburne,NS.
I summered in Shelburne,NS for about 22 years, from about 1959 to 1982. Can't beat it.