1. Cellphones can be handy for communicating with our companions, who may have separated with you during the trip. It’s also handy for when you need to call back home and check on loved-ones you’ve left behind. Before you go to Mexico, however, you may need to check coverage with your service provider. Also consider the rates you will be paying if you’re going to use the phone overseas. If the rates are too high, you can probably look into a cellphone rental service in Mexico online.
2. You will definitely have to bring your camera, as what is a trip without it? If you’re going to go swimming or snorkeling or if you plan to go check the cenotes site, you may also want to bring an under water camera. The things you can capture 20 feet below water are going to be pretty awesome and it would be a shame not to take photo souvernirs of it.
3. Have an English to Spanish dictionary with you, as this is probably going to be the best device at your disposal. While many Mexicans do know how to speak English, it’s still important to speak to them in their own language, as a form of courtesy. It may also be good to learn a few Spanish phrases you can use during your travel to this country before you visit it.