Thanks for checking out my page, and have fun getting back into it yourself. I stepped away from the park in late August to rest up from an injury, and haven't had time to get back into it but plan to in the spring.
Everyone is different, but for me I had to learn that at my age my mind and body are in two different places. My brain remembers how to skate and wants to cut it loose, but my body has a lot more mileage on it and can't handle what I used to put it through. During one session, I had my hamstring pop on me, and while it was only a minor tweak and nothing more severe like a tear, it rattled me and made me realize that it could have been a lot worse.
In the months since, I've been walking and jogging, have lost some weight and have more to go, and hopefully in doing so am also strengthening my tendons, muscles, and joints to help reduce the chance of something worse happening.
Do some stretches prior to skating, take it easy to see what limitations your body may throw at you, and have fun!