We just came back from there!
Let me just tell you that you will have the most incredible time, it was the best hotel i have ever been to, nothing else even compares!
Anyway, we went parasailing, they said it would be $100 for 2 people, but we bargained at got it to $60 for 2 two people, and that was really really worth it, they take you on a boat out into the sea and you parasail for about 15mins...incredible...Banana boating is around $10 per person, and thats just standard, they take you out on the banana boat and drop you off etc..they also have loads of activities included in the hotel, because its all inclusive, they have catamaran sailing, but you need to know how to do it...otherwise they charge for lessons...you can go kayaking, double kayaks or single, there is also sorkelling, and other games like archery, darts, rifle shooting, these are all competitions and if you've even been to an Iberostar you would know that they are big on giving everyone t-shirts for winning!! Anyway, you can go on a scuba diving excusion with the dressel divers, i'm not sure how much that is but it is supposed to be really good. Friends of ours there went to swim with sharks, which was supposedly incredible, and they also went on a tour to 5 different islands, but apparently that was expensive and a waste of time as they only got to go to 2 and they just sat around and the tour guides were lazy etc...
Anyway, at this hotel you will never ever get bored, theres beach volleyball, water aerobics, salsa, merengue, water polo, everything you can think of going on...The animation team there that run all this are incredible...
Sorry i can't help you much on nightlife, we didn't leave the resort, but they have a disco from 11pm to 3am in the hotel and they have shows every night from 9:30...they even had a whole michael jackson tribute while we were there..!
Anyway, hope you have a good time, and just for somthing extra, they play this song every single day about 3 times a day, and they have a special dance to it that everybody there knows....listen to it, you will feel very cool when you go and you know it!!
Thats the link.
Also, if you need any more info about the Iberostar Dominicana, just email me, or ask another question, i'll help!
Punta Cana is BEAUT.