Green Valley Ranch! Pool is superior and quiet! Spa is loaded with whatever they need and there is no cost if you are staying there.
Buffet is better than most and cheaper than anything comparable on the strip!!
Im 54 (will be 55 Monday) and I remember walking from Ballys, over the bridges, to Ceasars and then the Forum shops last August because my girl had never been to Ceasars. I was so whipped from that walk, in 103 degree weather, that I wanted to take a cab back to Ballys
You said they would do some walking (not more than a half mile) so when you add the heat of summer Vegas, to a walk to/from another casino, it will (I.M.H.O.) feel brutal. I doubt its much better in late June than mid-August
Good quarter Vp and low table limits are a staple of Green Valley also ("They like 25 cents slots, $5 craps").
And if they are there on "Senior 50 plus weds"......! They can't go wrong with GVR