1. Reasonable Travel Time
A flight from the midwestern part of the US to Belize City is approximately 6 hours, which is great for an international flight and geographically makes sense. My flight to Belize departed in the early morning. My first day on vacation was basically only an evening because I spent the whole day traveling. If I had to do it over again, I'd get an overnight flight so that I'd have a full first day to explore Belize. In other words, you can arrange your travel time so that you can maximize your first day of vacation.
2. Easy Communication
The national language in Belize is English. Many of the people I met also spoke Spanish and Creole with African influences. If you're from an English speaking country, then it's very easy to get around and communicate. Locals are very kind and willing to help. My first night in Belize, my friends and I went out to dinner and had no idea that by 10pm, all the water taxis back to the resort closed. As we were wandering through the town trying to figure out what we should do, we ran into a friendly face from the restaurant where we had dinner. Despite him being tired from a long day at work, he rode his bike alongside us to get us to other means of transportation. Ultimately, he didn't have to do that and I could chalk it up to him having great character, but we received that same kindness from other locals as well.