We were there last June
PM for a link of pics and videos.
In answer to your questions:
1) are there any free wifi in the hotel/beach?
If you sign for Whyndham by request (is free) on their website u get special treatment,,, like bookig ur a la carte dinners together for up to 4 days in advance, bottle of wine when u get in and robes. U also get free internet usage tickets,,, but there is no wi-fi, at least when we were there.
2) is there any really nice nightlife nearby?
No Dominican-style nigth life,,, there are about 3 other hotels in the area with the same style disco as the whyndham and few other bars right outside the hotel, but the animation team works really hard to keep u busy.
On Saturdays they have a WHITE party at the beach,,, make sure to bring something realy comfy in white, drinks and music is by the beach side on the sand.
Be prepared to walk,, two resorts together Place and Beach,,,,, the shows are at the Beach and the disco at the Palace.
3) any good DR food nearby? (hate to go to DR for italian food)
Sad to say the best food they have is at the Italian restaurant,,, but their buffet is not bad,,,, you can enjoy Dominican food two nights because one night they have it at the Beach and another night at the Palace.
They have a great grill but that is on the beach side aaaaaawwwwaaaayyyy from everything. We had lunches there most of the time.
Hope u have a good time,,,,, we did, don't miss the Catalinita or Saona trip.
On the weekend the Beach side will be packed with Dominicans so it feels rreeeeaaalllly busy,,, but there is tons of beach chairs. Also there is a nice tranquil pool between the two hotels and it has a bar which is never busy.
We will be there again probably in March,,, it was perfect for us,,, a combination of everything specially having many choices of food and ambiance.
Good luck
CB