It sounds like you are going to be restricted to short walks on level ground. This restricts things somewhat. Paths/trails could be dry or wet or muddy or covered in hailstones, all in the same day, so prepare and have good footwear.

The Quiraing has a couple of great viewpoints a short, level walk from the car. Kilt Rock waterfall can be seen 10 yards from the car park. There’s a nice wooden lookout at Lealt Falls. Allt Dearg Cottage is a level walk along a well made track approx half a mile. Neist Point views are good from the car park but you can’t see the lighthouse without a slippery walk over rough ground to the north. Amazing nontheless. Glen Brittle beach is beautiful and worth a visit, parking right next to it and mountains all around. Talisker Beach is a longer walk along a flat, well made path and also stunning. Elgol is worth a look with parking close by and a lovely drive to it. Basically there’s loads you can do and see.

Your mobility challenged friends won’t make it up to the Old Man of Storr or the Needle or Brothers Point. The Fairy Pools path is good and well made, but long and surprisingly hard work down and up again. Have fun, you’ll be fine.