At Hotel México Plaza Celaya, the available room types include Standard Twin Rooms and King Rooms. The Standard Twin Rooms have a room size of 248 sqft and can accommodate up to 4 adults. They have 2 double beds and smoking is not allowed. The King Rooms have the same room size of 248 sqft but can accommodate 2 adults. They have 1 king-size bed and smoking is not allowed.

Based on the provided data, guests at Hotel México Plaza Celaya can spend their time at the hotel by utilizing the fitness center. The hotel features a fitness center, which suggests that guests can engage in physical exercise activities during their stay. However, no other specific leisure amenities are mentioned in the data, so it is unclear what other options are available.

It is important to note that without more information, it is difficult to ascertain what activities guests can engage in. Whether the hotel offers swimming pools, spa facilities, or other recreational areas is not mentioned in the data. Therefore, it is advisable for guests to inquire with the hotel directly for a comprehensive list of leisure amenities available to them during their stay.

The hotel has an outdoor rooftop pool available year-round, but it is designated for adults only. There is no mention of any other pools or additional pool options. Therefore, based on the provided information, the hotel has one pool suitable for adult guests.