DH & I took my aunts, 80 & 84 at the time, a couple of years ago. The aunties rode everything except RnR and Space Mountain. They also really enjoyed the tea at GF. We made PS for Rose & Crown for about half an hour before Illuminations, with the understanding that they couldn't guarantee an outside table, but the CM's were wonderful. We mentioned at the podium at check-in that the aunties were in their 80's and while in good health, probably not up to standing for a long time. The CM's at Rose & Crown actually set up an extra table outside so we would be guaranteed a seated view of Illuminations. We found this kind of consideration everywhere we went. Our overall strategy was just to break up each park into a few "riding" attractions, then a show (cool off, rest the tootsies) and to head for a store or a shady spot every so often. Also, take extra care to stay hydrated, because by the time you're thirsty it's too late.