Pretty good tour! Four stops total, in this order: Valladolid, lunch, Chichen Itza, and Ik Kil cenote.
Valladolid is a quaint, authentic Mexican town, but ultimately forgettable. at least, there's not much exploring to be done in just half an hour-- we mostly just snapped pictures around the town square.
Lunch was incredible!-- far superior to the lunches I had on other tours. At a roadside tourist stop with a big store selling a wide variety of Mayan merch, we watched a brief demo of how traditional Cochinita Pibil and corn tortillas are made, then got to eat some along with other yummy Yucatan cuisine, like Sopa de Lima and marinated chicken at an impressive, high quality buffet lunch. 5 stars.
Chichen Itza was as impressive as you'd hope, and it's geographically vast. We had about an hour and a half there total-- half the time we followed our guide Raphael on a guided tour of the ancient ball court and the most famous structure, El Castillo, a.k.a. the Temple of Kukulcan. He gave us some interesting facts, though some of it was purely theoretical or contradicted with information I'd researched online. He took some liberties with the legends-- take his facts with a grain of salt, that's my advice. Then we had free time to explore the grounds-- but again, since they're so vast, we had to choose between seeing the ancient Observatory or the Sacred Cenote. I would've preferred if we'd skipped Valladolid and just had more time at Chichen Itza. One last thing I didn't like about Chichen Itza: all the wooded paths are clogged with merchants hocking Mayan merch, most of it the same as the next table's. They should really move these guys outside the grounds.
And finally, the Ik Kil cenote: It was very cool. A little crowded, but not too bad. We descended into the wide sinkhole and took turns jumping into the cool waters. They rent lockers there, have plenty of toilets and changing rooms, and kindly ask you to rinse off before jumping in, to preserve the water quality. Which is great, when you see how many tourists go through there every day. A fun, 45-minute stop, and a nice refreshing way to end a day under the hot Mexican sun.
Overall, a positive experience! Like I said, I would lose the Valladolid stop in favor of more time at Chichen Itza. Oh and the bus was very comfortable and our driver was professional. Everything on this tour was clean, safe and comfortable.