But then you’ve got get yourself to the Xcaret bus pickup point right next to the Fiesta Americana Grand Coral Beach Hotel, in front of Plaza Caracol shopping center. Daily departures at 8:30am.

If you book through the resort, you’ll get the transportation, a guide, lunch and be able to close your eyes on the trip back after a day of activity.

2. Click this link to check out photos and details on the Park Royal Cancun:
http://bookit.com/mexico/cancun/hotels/park-royal-cancun-all-inclusive-resort/?promoId=5386271

Kids under six stay free, and it’s close to the La Isla shopping center.
http://www.youtube.com/watch?v=u1drZhkBPCw

3. Having a car does have it’s advantages–you can depart and return when you want. It’s about a two hour drive over to Chichen Itza and you can usually pick up a guide at the entrance if you want someone to explain the structures and history. A car will be convenient for the trip down to Playa del Carmen to catch the ferry to Cozumel. Ferry times and prices are on this link:
http://www.travelyucatan.com/cozumel_ferry.php

4. If you’re going to do Tulum, it’s a lot smaller than Chichen Itza. and you can see all of Tulum in under two hours. As long as your that far south, you should go to Xel-ha for the rest of the day:
http://www.youtube.com/watch?v=vneKV2Z9YM4
http://www.xelha.com/

The only other thing you might want to add to the things you’ve already got planned is Selvatica–the adventure kingdom, if grandma wants to try the zip lines:
http://www.selvatica.com.mx/

And with a car you may want to explore other Maya ruins. Click this map to see how many there are on the Yucatan peninsula:
http://www.travelyucatan.com/yucatan-peninsula-map.php
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