Better Belize It!
Congrats on your up coming marriage! My wife and I honeymooned on Ambergris in January 2012- good choice. El Pescador is your best bet for quality fly guides since they target the "big three" almost exclusively. We took a trip with them and the guide (can't recall his name - Gasper maybe) worked hard to put us on fish and we caught a ton of 15"-17" bone fish, but only one shot at a permit and zero tarpon. El Pescador's fly and spinning gear was in fair to good condition, but I brought my own stuff and was glad I did. The second trip, we hired a local independent guide and trolled the inside of the reef and caught a lot of Snapper, Cuddas and other reef fish. My wife really enjoyed this action and the variety species, not to mention the size of the fish were way bigger than bone fish so the fights were way more fun. After fishing the morning we snorkeled for conch and the guide beached the boat and cooked us a shore lunch of snapper, conch fritters and mango paired with several Belekins. Frankly I enjoyed the reef trip more than the El Pescador trip, catching little bones gets old after a while. Tip #1 - if you take an independent guide, be sure you bring plenty of terminal tackle, i.e. swivels, light leader wire, hooks and some big rattletraps, cudda tubes, spoons and big topwaters from the States. You will get broke off on the reef and cut off by Cuddas often- so don't take any of your favorite/expensive lures. Tackle is hard to come by down there and when the guide runs out of his stuff, you're screwed - also, you can leave the stuff with the guide as part of his tip. Tip #2 - take your own rod(s) - the guides' gear will be pretty beat up. I had 2 Med Hvy travel spinning rods with 4000 class reels and 50# braid, perfect for anything inside the reef. Lastly, there are several older posts on this site about Belize, so use your search function or send me PM for more info.
Have a great honeymoon!