Old San Juan Dinner Ideas for Small Bachelorette

I’m the MOH for my sister’s bachelorette party of 6. We are 30-40 years old. She really seems to be going for vibes (read photos) over taste (but obviously both). Hoping for $30-50 USD per plate. Reviews seem to vary GREATLY per restaurants. Bonus points if they have good fresh oysters. It’ll be for a Saturday.