First time in Mexico, staying in all inclusive, from Canada, quick question!

Hi all!

Staying for 4 nights at the Excellence Playa Mujares. Never been to Mexico and never stayed in All Inc. The hotel will provide transport to/from Cancun Airport.

We won't buy trinkets and we'll probably do a Isla Mujares excursion. We are not big drinkers so will do 1-2 drinks per day max. With that in mind, what type of currency shall we bring, and how much? Do they prefer Peso or USD?

I'll tip the driver, bar staff,, house keeping, tour guides. Is tipping at restaurants also expected? Anyone else I'm missing?

Thanks!