Flies are still an issue here, but not really bad. Just about a month out of the year that you're not here for. The Mexicans plan and keep towels over the food they sell. Usually we have issue with ants as all biting and fire ants come from acapulco. Where there's food and people there are ants unless you're in an apartment building and even then lol.
I honestly get more annoyed by wasps here (theres a wasp breed that attacks me when we make dabs, not kidding) than anything