All, thanks for your replies. This is all very helpful information.

We have decided against a trip to Thailand for now and are heading to Mexico and Southern California instead. We are spanish speaking so have no issues with the language barrier.

The cross contamination was what I was mostly worried about, we were going to bring the cards noting the deadly allergies, etc.

Appreciate all the help. We will, however, visit Thailand at some point - please keep the recommendations coming!