Can I have a wedding renewal ceremony in the Dominican Republic without using the hotel?

I have booked into The Allegro resort in Playa Dorado. My husband and I want to renew our vows with our five children, on the beach. The hotel will only provide this ceremony in a garden setting and with a bunch of extras for a larger group that we don't want. They will not adjust the very high price to do the very simple ceremony we are looking for. Is there another way?