travelers checks

Sometimes the same rate and sometimes .1% less.
So instead of 32.8, you might get, 32.7.

In other words, still more economic and safer than ATM's.
You may have to shop two or three Cambios I am guessing.
Unfortunately, you usually need a passport.

Make friends with someone at a Cambio that knows you will use them a few times and you will only need the actual passport the first time. A copy will suffice subsequently.

When you get here. Ask banco de cambio what rate of exchange is. Act like you have dollars. When you find out rate, tell him you want to change tranvelers checks. If he says rate lower, tell him you are going someplace else. There are lots of bancos de cambio in Sosua. If you don't want to accept the rate the first person was going to give you, follow same procedure at others. Likely one of them will give you the same rate as for cash.

I found that banks cashed them at a higher rate as "casas de cambios" (foreign exchange booths) in Santo Domingo. However, it would take longer (more paper work) to get it done.

... J-D.