We arrived on a Friday in March and it
took us about 45 minutes to get our luggage, clear customs, and check in at Tropic Air. However, there was 9 of us and we were the last ones of the plane when we arrived in BC. The first time we went to Belize it was just me and my wife and we were sitting at Jets waiting on our flight to the island in 20 minutes after landing in BC.

Jets is in the Tropic/Maya air terminal.
Once you clear security it will be on your left.