Thank you! Ideally, I will go and camp there and nearby from Saturday to Monday and then I will go to Whitney on Tuesday. It should help to be restful and acclimatized.
If you're going for three nights, you don't
NEED to go to Horseshoe Meadows for acclimatization. I use HM for more of a short-term 'extreme' acclimatization overnighter. You should at least sleep as high as Whitney Portal for the 3 nights.
But Horseshoe Meadows has a nice easy hike to Trail Peak, if you want to spend a day (or overnight as well). Here's a link for you:
Acclimation hikes
