I would not think the older part of Trophy Club would be significantly different from Grapevine.
The newer part where new homes are being built probably attracts more families with kids.
Family friendly golf in my opinion and not every course can say that....well they can, but get your 13 year old novice out there at 8am on a Saturday morning in a 3some of doctors and see what happens.
Not sure by what you mean by "community". To me it is what you make it. There are people who are involved in any community who would say it is strong and lively, and others who don't participate say nothing goes on.
I think there is no better way to find out than go participate in some of their events. See if you like the people, talk to them, tell them your concerns, ask questions, etc.
Friday, December 7 - Roundabout Dedication & Christmas Tree Lighting
Saturday, December 8 - Christmas Celebration at the Clock Tower
Monday, December 17 - TC Holiday Lights Contest - Judging Day
You can compare areas very generally with this tool:
You can search homes in Trophy Club at this link: