Normal washes take 6 days, so don’t leave things till the last minute. For a 50% surcharge, you can have things done express, which only takes 3 days. They don’t take credit card, but Tiong Bahru Plaza has various ATMs(POSB/DBS and UOB primarily) so you should be okay. The staff are generally pretty friendly. This isn’t a slick operation by any means, more of a chain place staffed by mom and pop type people. Still, they get your stuff pretty clean, and the prices are reasonable, so no complaints. I’m sure there’re better options out there, but for convenience, it’s pretty good.