Travelers cheques in San Pedro are more trouble than they are worth. I bring crisp US currency, no bills larger than a 50. (one dollar bills don't seem to be a problem if they aren't crisp) and I use the ATM if and when the wallet runs out of US currency. I don't fuss too much over ATM transactions fees as they are really "a small thing in a big ship".

A fish and a bird can fall in love, but where will they build their nest?