Travel tips and trends

Hi everyone, Me and my gf will visit Conzumel from nov 8 to 13, we've never been there before and im just wondering if this is the best time to go there. What are the best recreational activities to do in there and which is the best place to hang out and dine for a reasonable price? btw , unlike my gf im not a us citizen but i do have a permanent residence card, do i still need to obtain visa? if so, what are the requirements? and finally, does my gf need to have a tourist card tourist card because we will be staying there for more than 72 hrs?