Things to do with older ladies in Yukatan Progresso

[Ready2Cruise2016]

Hi all! A group of ladies in my family will be taking a cruise in September. Ages range from 13 to 70s, and some of the ladies have mobility issues. I'm trying to find some thing for us all to do in Progresso that will be fun, but not to taxing. I think they are wanting to do an AI resort in Cozumel, so hoping for something a bit different. Are there things to do without a planned excursion? We don't necessarily mind splitting up if needed, but prefer not to. I like the idea of the cenotes, but all I've seen have steep ladders/steps to climb. :( And the ruins are obviously a no-go. What else is there??