Unfortunately no, Due to having a destination wedding, it is hard to connect with the venue, in regards to changes. No one is an exception. You might be able to go, however no food will be served.
We recommend booking hotels and flights in advance about 3-6 months to avoid delays or having to pay for a pricier air fare.
No, Unless they are part of the wedding party. This Wedding is Adults Only
We recommend doing Airbnbs they are a lot cheaper than hotels in Punta Cana and it can be split from groups as well. However AC Marriot is another great hotel, it is near the airport, and the location of the Venue.