I would like to workout sometimes with my Granddaughter after school or sometime on a Saturday morning or afternoon. Would that be possible?

Yes you can workout with your granddaughter there in the evening 4 free. Just take your i.d. the 1st visit. So you can sign the waiver. And workout 4 free.

Yes it is

Call or text the Judson Robinson Center for information.

They do have after school times. Check the Houston Parks and Recreation site for calendar of events and times.