We are 60ish years of age and look to travel to Central America and Mexico for about 3 months to research for a retirement destination. We have no schedule other than for departing Toronto, Canada (YYZ) sometime in the first two weeks of December and returning late March or so. Our first destination in mind is Panama (PTY). We were going to book one way tickets with COPA Airlines but they say we have to book return. We know from previous travels that countries requiring Visas want to enforce an exit travel ticket to make sure you do not stay beyond the Visa. But for countries like Panama that require no Visas, how can we bypass these restrictions - we are unlikely to return to Canada from Panama, but will go on to maybe Costa Rica, Uruguay and Mexico as the mood moves us. Suggestions/insights would be most welcomed!!