Hi. I loved your TR! Thanks for that. I have a question: I'm staying at the royal and this is my first trip to Mexico and I've been getting conflicting answers to the question US dollars or Pesos? Really at this point I'm very confused. Can I tip at the resort with US $ or do I need to do so in pesos? Also, what is an appropriate tip? I've read 10-15% but as it's AI how will I know what percentage it is? Any insight you can provide would be most appreciated!