Belize 4/21-4/30

First time international tourists, so any general international travel advice is also welcome.

We are honeymooning in Belize from 4/21-4/30. Looking for travel recommendations such as restaurants, hotels, resorts, tours, tips/tricks, etc. What was your experience there? What to stay away from? What are your opinions on all inclusive?

We want to see the jungle, Mayan ruins, and the ocean. Neither of us scuba, but snorkeling is fine. She wants to consume her weight in seafood while there, while he doesn’t eat it.