Just think it through. (I know you will.) My daughter has a friend (from high school, so she has known of their issues for over 25 years) whose parents moved from So. Cal., where their multiple kids from multiple marriages, plus grandkids, all live. These parents are recovering alcoholics, sober for about 20 years...so good on them.
The husband retired, the wife...younger...left her job, they had a house built in a senior development six hours or so driving time from the friends and family.
Two months after the move, family members commented that the retirees were drinking at a wedding. Three-and-half months after the move, last night, the mom was drunk posting on FB. I mean REALLY drunk posting, picking fights with her first husband on their collective kid's FB page. It was ugly.
Apparently, her lifestyle kept her clean and sober. But they left it...and left her job, her friends, her kids, her grandkids and it's an all day event to get there to see them. (Closest airport about two hours away.) And I'm pretty sure the husband is just as drunk.
Some people are portable and others are not.
Disclaimer...we moved about a 4.5-5 hour drive from our daughter. But airports are nearby. We recently had a dry spell on visits that bothered me, but they flew up for a weekend last month and may do it again later this month. And, I am in daily communication with my kid most of the time. This poor lady has so many kids and step-kids and is so far from easy transportation and has nothing to do all day...it's just sad to watch.