as a jazz musician who has been to cuba i can not agree more with what u/kananaskis_country wrote. you had better be very, very, good and extremely well versed in latin rhythms, . . . extremely. everyone, i mean everyone that i played with in cuba could play their ass off, with feeling, the first time. these guys (and gals) have spent a lifetime honing their craft and take it very seriously. cubano salsa is different from PR's which is different from the DR's, know th differences, know the difference between meringue and cumbia, between son and bolero, between samba and bossa. this knowledge is imperative, must have stuff.

if you have not done so already, recommend you study up on cubano jazz before you go, (not just buena vista social club), really study, . . . . . go deep. have at least two dozen tunes under your belt that you can play in any key at the drop of a hat. (you're used to playing 'autumn leaves' in Am? they will call it in F). be ready 'cause they likely will. half of them should be latin jazz standards at minimum.

also, respect is huge, be humble. in my experience the musical communities in latin countries have zero tolerance for egos. along with being monster musicians these guys are also very, very, much team players as well being very as humble about their own abilities to the point of non-chalance. it is expected that you will do the same. be chill. tranquilo 'migo.

i went first when i was in my mid 40's and had been playing jazz for 20+ years. i held my own, . . . but just barely. if i had my first experience to do over again i would go and just check the scene out, network, make a few contacts, &c. . . .

once again, not trying to scare you off, just amking sure that you are properly prepped so you can represent.

best.