Let's see. I'll be absolutely honest with you... PPR is newer and more modern (it's major advantage). It's a smaller territory so if you don't like walking a lot and like everything to be close then you'll probably prefer PPR. Also it is better situated (beach, mall, high tech disco, more pleasure discovering things around the hotel). PPC is like a huge garden where you can walk a lot and enjoy nature. Rooms: both hotels have The Reserve, this is a Private area , this Reserve Club is a little bit far from the beach, but where you'll have private lobby registration, concierge, restaurants, pools, very special kids area and the best rooms. About the food, PPR is really good, if at the PPC Reserve you won't have complaints. About the night life, animation team does pretty good job at both hotels but after the shows at the theaters the night life its not really exciting in any of them. Right next to PPR, (10 minutes by taxi from PPC) there is the Palma Real Shooping Village , a mall where you can find Restaurants (Hard Rock Caf©, Tony Roma´s Steakhouse etc...) Shops (Diesel, Hugo Boss, Puma, Armani) Souvenirs Stores, Cinema, and now a new modern disco Jewel's.
If you still can change to Palma do that but if not, I can assure you that Punta Cana is also very good and you will definitely enjoy it a lot at PPC. Now about the whole experience you'll find a lot of people that have been at both hotels and prefer the PPC and others that prefers PPR for different reasons, but you'll trust you instincts, plan your own activities for the whole stay, become a friend with your wedding cordinator, be friendly and be happy and everyone here will make things easier for you, some for tips and some just to help.
I can give you some contact numbers to make some things easier if you should stay at PPC, like taxis, flowers or favors. I don´t know just enjoy and see this like an adventure, something to remember, get your guests involved on helping and you'll have less complaints cause they won't be waiting that you organize everything for them, and they will surprise you organizing things for you. The only thing that you need is your man and your beloved ones, people that really love you will make things easier for you no matter what.
(I´ve seen so stressed and rigid ceremonies on beautifull and bright days, and I've seen others so happy where people get wet under rain on a beach wedding) and about the reviews at trip advisor good and bad reviews about PPR or PPC are not even 0.010% of the guests that are coming to these hotels, yes there are some sh**** hotels in the area but PPC it's not one of them.
Have a great wedding and send me a message to tell me how great was your wedding wherever was.
Happy planing Katie