There will be 1001 tour companies and your hotel selling trips to Chichen. It's very nice and very very touristy. I prefer Coba and the centotes nearby. I Would suggest that over the long trek to Chichen. I also second just taking the local bus up and down the hotel zone. we stayed in Playa del Carmen and used the local ADO buses without issue. We also rented a car and drove all over the Yucatan without issue.
The Cancun Hotel Zone is very much a Little America and you'll find most American eateries and shops there.