The lot for glamping is about a two minute walk away, and based on this year's map, I'm guessing it's about a five minute walk for those in regular. It's not gonna be so far that if you need to do a couple trips back and forth it'll be annoying, but you might want a small trolley to make it easier/faster unless you have enough people to lug everything.
Will it be hard for someone to come and find our site after?
They've really expanded camping this year, so to be honest, it would just be guessing on my part. From the map they posted, it looks like regular camping will be in the sports fields at the community centre next to the site... I really don't think it would be that hard to find friends' campsites there. I mean, if I managed to find my friends' campsite at Glastonbury without knowing anything besides which field they were in, I think wandering around a soccer field would be a piece of cake.
I was thinking for Madeon, but either way I won't be there for the very beginning of the late night sets. I plan on watching all of Vampire Weekend and QOTSA before making a break for the second stage.