Ecuador sounds pretty much the same as Guatemala. Get a local lawyer, or better , marry a Guatemalan, LOL! Regulations can change, as they have here in Guate. Different countries may have different regulations, which may or may not be strictly enforced. I know some Gringos here in Guate who have overextended their 90 day visas for months, and all they had to do is pay a few hundred Quetzal fine, cross into Mexico and cross back into Guatemala 3 days later. However, I would NOT recommend it.