Thanks to everyone for providing your insights. You are spot-on. We offer a relaxed ambiance, with tropical smart casual being the norm. Enjoy!
Breakfast and lunch are very casual, but everyone I saw was always "nice" nothing really that seemed to push the line. Dinner was a bit more formal, and I mean just a bit more. For the restaurant on the beach, attached to the bar, you are expected to be in beach wear.
Most men are wearing dressy shorts or slacks and a nice shirt at dinner. Ladies typically wear a summer dress. Their dress code says “no shorts” but it isn’t strictly followed. Use it as your opportunity to clean up after a fun day and wear your nice “resort wear” for dinner.
Get an answer from Hotel Punta Islita, Autograph Collection staff and past guests.