Have at least two weeks of underwear or more. (For ladies, having extra is always good.) You can look into laundry services if you can afford it and if it's available in your area where they wash and drop it off for you.

If at all possible, try going to the laundromat at odd times. When I had to go to the laundromat, I was lucky and had Mondays off and would go at around noon, and it was so much faster because no one was there.

It's a weird thing, but don't fold your clothes at the laundromat. Do that at home, It lowers the risk of bedbugs and lowers the risk of lossing clothing.