We have stayed there 3 times. For breakfast and lunch.... No shirt, No shoes, No service. sandals, shorts OK, no bathing suits. The regular evening meal, the same, but a little more formal if you go to one of the special dining rooms.... Not much more, but an opportunity for you ladies to dress up .
For entertainment... You can veg out on the beach and beach bar all week, or get out and see something of the DR. 20 K West is Columbus' first village with both his and some Taino relics. 40K East and S are the waterfalls. 28 in all. Only the lower 7 for all but the very fit. Great day. 2-3 hours inland are Constanza and Jarabacoa, two of the most fertile and beautiful valleys you can find anywhere in the world. At 2000 up to 5000' the days are lovely and the nights cool. Then a 3 day mule/ hike to the summit at 10500'
Safety.... We have never felt threatened anywhere, any time of night. Just dont be stupid and drink way too much with lots of cash
Enjoy