It will take about 2 hours or so to reach Chichen Itza from Cancun by bus.
Hiring a car to travel there you is a good option too.
You can also take a tour through a local company. The cost of this will be around 450 pesos
Do not try to climb up the pyramid.
The temperatures soar in summer so if you intend to go then, just try to schedule your visit early in the morning or in the evening.
Be careful with your belongings and carry only the essentials.
La Isla Shopping Village
Tip: Haggling for non-branded goods with the locals will probably net you a satisfactory discount.
Forum Beach Cancun
Bathroom and shower facilities are provided for less than USD 1.
Sunbeds and umbrellas are available for rent.
For about USD 10, you may enter a private beach club.
Check out the beach volleyball court.
Try and spend the whole night here; they play live music form afternoon till dawn.
The ticket prices will differ according to the season and the event.
Do check out the theme parties if you happen to visit during one. It is a very fun experience.