During your visit to the Tikal district, do not stray from marked pedestrian trails, plan to bring a good pair of shoes with you and some binoculars to observe the fauna and arrive early to see the beautiful sunrise on the pyramids.
In Honduras, the archaeological site of Copan, 'The Athens of the New World', is only 9 miles from the Guatemalese border and you need at least a day to visit it.
Do not miss out on the markets, which although touristic, remain authentic and are a good opportunity to see Indian women wearing huipiles and other traditional dresses.
Bargaining is normal, except for in restaurants. Prices are never marked and are always increased for tourists, therefore you must negotiate.
Residents do not really like to have their photo taken. If they do accept, they will ask for a couple of quetzals in exchange. If they refuse, do not insist.
As for the sauces, there is guacamole and chirmol (a famous sauce made of tomatoes, hot peppers and onions). There is also plenty of fruit in Guatemala such as pineapples, bananas, papayas and melons.
Regarding beverages: there are a lot of local beers, corn alcohol called 'chicha' and sugar cane alcohols like 'levenado'.
Other traditional souvenirs include bracelets and items made of jade, silver jewellery, sculpted wooden masks representing the country's emblematic animals, and ceramics by Indians whose savoir-faire is ancestral...