pjrose,
Again, I am only familiar w/ the Sands, but here is my routine:
I separate whites from colored and request 2 washing machines, one for each. I put my clothes in the washers designated for me. The attendant, I forget her name - forgive me - I should remember, adds the detergent (which I have supplied) for my load, asks me for the washer settings I desire & starts the machines.
The next time I see her is to pick up my laundry. I have never had a problem with shrinking, etc.
I have noticed, however, EVERY time I use the laundry, several persons sitting around waiting while clothes are being washed or dried. Maybe they do not understand the total available service or do not want someone else to handle their "unmentionables". As for me - I have better things to do.
Hope this helps.
Lenny