@AlanDavid : You may want to check the YMCA at Shadowbend for some of their programs. They have a pretty active senior group although you're the young end of that. There are also many different types of activities there. I teach water aerobics at the Conroe but I used to teach in the Woodlands. There are some great people that you can meet. Talk to Roxanne Davis if you have a chance. She is the community lies on and can give you some good direction. You may also want to call the township and check into their pickle ball program as they may have a wheelchair Group.
The Woodlands recreation center is a great source of information and activities. You can find out more by calling 281-210-3900 and asking for the program director. You can also go online and find offerings that they have. Another great place to meet people and get involved is the Conroe rec center. They have a variety of programs. I am not sure if they have wheelchair tennis but I know there's something that you can get involved in.