When I left POP in May I was allowed to pay in pesos. There were quite a few newspaper articles about how the airlines couldn't obligate you to pay in dollars and it appeared it was going to change. I returned and left again in June and was not allowed to pay in pesos and was forced to pay in dollars. All the arguing did not help. The airlines collect the tax for the airport and it appears that having change in both dollars and pesos was one of the issues. A Dominican York standing next to pay offered to pay my $10 and when I wanted to give her the pesos she refused. I insisted she take it but it shows how generous Dominicans are both in the DR and here in the US.