We've been to SP the last week of Oct. first week of Nov the past three years. A little buggy but certainly nothing to be concerned about. A little more likely to rain but again not a problem. Out of seven days you should have 5 great days, a couple that give you additional time to relax, contemplate life and watch the rain. (Adult beverages help during those moments, if one is so inclined.) Lamanai is great trip. We've used Seduced by BZ the last few times. Elitio's boat is a real experience on the Northern River. TAKE BUG SPRAY, even in April.
We are also going to be there through the 5th of Nov., so we actually practice what we preach.
C-C