My in-laws live at Robson Ranch near Denton, so I'm somewhat familiar with it. They love it there, but they're not real active since both are in their mid 80s. MIL takes art/painting classes and enjoys that immensely. They also use the library quite a bit. They drive their golf cart to the clubhouse for various activities, performances, and of course the restaurant, which is good but not spectacular.
The grounds are quite nice, but lots of expansion and construction mess last time we were there. It's definitely in a growth spurt after several years of nothing following the recession. Security seems to be pretty tight. Gates are manned until about 9pm and they screen all visitors.
In-laws told me the HOA fees are about $1000 every 6 months and do not include landscape maintenance, which they pay separately. This struck me as high, but I've never paid an HOA fee, and dislike the whole concept. But obviously for a community like this, it's essential, and they seem to do a fairly good job, but very strict.
Shopping is indeed a bit difficult. Closest grocery store is 15-20 minutes away in Denton. There's a small hardware store in Justin, which is fairly close. Robson is technically in Denton but quite a long way outside the city. It's much closer to Argyle, which is growing rapidly, but very few stores there currently. A grocery store chain purchased a piece of land in Argyle near Robson, but said they wouldn't build for a couple more years. So maybe that will get better.
Lots of gas wells in and around the Robson Ranch property, which are reportedly getting closer and closer to housing (or maybe the other way around). Generally, people don't want to live near wells, so that could affect property values in the future. But folks at Robson don't seem to mind too much.
To me, the houses all look the same. But there are a variety of sizes and options. We helped the in-laws pick a house, so we went through all the models and options. The designs are all quite good. Construction seems to be high quality with good attention to detail. Yet it's not crazy expensive. I think they paid a little more than $200K for about 1800 sqft, 2 bedroom, 2 bath, with a large office on about 1/4 acre. That was 5 years ago, so pricing may be higher now.
The whole place is very golf centric. The in-laws are happy there, but aside from art classes, they really don't do much. It's probably more suited to a younger retiree who enjoys golf and other activities, like tennis, softball, pickle ball, swimming, exercise classes, hobby clubs, etc.
Denton itself is a very interesting place. Not your typical small Texas town due to the two universities with 50K students combined. I think the non-student population is only 100K, so you get an idea of the mix. Very active music scene. The downtown square and surrounding area has developed into a unique destination to shop, eat, drink, hangout, listen to bands, eat ice cream, picnic on the courthouse lawn, whatever. Lots of quirky shops, restaurants, music venues, microbreweries, etc. There's now a train that links up with DART as well.
That's all I can think of at the moment. Hope that helps.