Just how strong is the U.S. Dollar in Cancun? My friends here all seem to have dollar and peso accounts in their banks. Are there establishments that only accept dollars? Pesos? Is it generally more advantageous to pay in dollars? I ask this because on a recent trip to Merida via the Autopista, I had to pay 202 pesos at the cuota. But as I passed through the gate, I saw where I could have paid $9.50 usd. ...a savings of over 50% I'm thinking a dollar goes much further in Cancun, than the peso, no matter (almost) what the exchange rate is.