I prefer it by myself.
With regards a rewire, I will carry out a thorough pre works visit. From this you can tell the customer which items they have to move out of the way beforehand, I.e. big bed gets put on its side etc.
Saying that, a rewire is the one job I will get a labourer in for, mostly for chasing. However, it's peferfectly doable by yourself, just hard work.
You just get used to working by yourself, and I can think of only one time ever I actually HAD to have a second pair of hands, to move a NSH.
Play whatever radio station you want.
Walk around pondering for 30 mins without feeling silly.
Sing your heart out, without feeling silly.
Work late, stop early, turn up late, turn up early, it's up to you.