Hi. No Celebrity don't have self-service laundry. They do have a laundry service you can use, either regular washes by the bag full, or dry cleaning of individual items. We pre paid for a bag before we sailed, got it in the sale for 39 dollars. The bag is in your cabin and you just stuff in as much as you can. We got about 14 t-shirts, some shorts and lots of underwear in it! If the drawstring closes, you're good. It comes back washed and folded in about 48 hours. I'd avoid sending any delicate fabrics.