As I recall, you have to take a taxi. I can't recall how much it is.........
Please don't let the "pricks" on the board put you off. Most of the Samana Peninsula is a favourite of Europeans, so people of your lifestyle should not be "unheard of". It is in my opinion, one of the most beautiful parts of the Island. Enjoy it.
I am most certainly not an expert, but if I can help at all, please let me know by email or PM.
Rose