I've been fishing most often the last few years near Long Caye and St.Geo.caye. There about a 45 minute ride south from AC. I think Turneffe would be about an hour more southeast and Belize City about an hour west/southwest. After 3-4 hours down there we fish it back to AC. There are some wadeable flats 1/2 way back and a bit to the west but there small. Certainly nothing like the hours you spend wandering aroud Turneffe. The flats in northern AC are way up the island and require a guide. Interesting about Capt. Morgan though. We stayed there our first trip to AC, and it is a great place for first-timers. They've got a very predictable school of bonefish around their pier/beach mid-morning and again late afternoon that are/were above average in size. The day we arrived I was sitting on their seawall and realized I was looking at a couple dozen tailing fish. Thought I'd died and gone to...The beach is open to fish, lots of turtle grass, but the pier is off limits unless your a guest(makes sense). Hope that helps.
Flyfishing my way through mid-life crisis.