Make sure you see Tikal at the Guatemala border... Also the Belize Zoo is pretty cool.. especially if you've never seen a Tapir; you can see the zoo on your way to San ignacio, or on your way back to Belize city.. in San ignacio take the cave tour ... On your day off go to Cahal pech, it's within walking distance.. Watch out for the Deadly Fer D'Lance it's not only one of the top 10 most venomous Terrestrial Snakes, it's also on the List for most Aggressive... when in the bush always carry a machete, you can buy one there for about $15, the locals can sharpen it for you.. Never trekked Guatemala except for Tikal .. Oh yeah avoid spending a night in Belize City ..