My wife and I were on the beach on back side of Pinel in August and saw the boat go to Tintamarre pretty frequently. The boats they use look just like the Pinel ferry boats. We didn’t fit into our schedule this year, but are planning to make the trip next August. The meal prices are per person and they only take cash so that factored into our decision too. Pretty sure they have some reviews on Trip Advisor as well. Some under destination Tintamarre and some were posted under Tintamarre beach reviews.