Yes, that's the one.

Thanks so much!

Big C Ratchadaphisek
 

Update: Big C Ratchadaphisek hole has been closed. Toilets totally renovated.:mad:

I was in Chachoengsao last Sat 18mar2017 and went to the bus station. Part of the bus station is closed for renovation. The remaining part has a free public toilet, with two cubicles, separated by a tiled wall. (I.e. there is no glory hole, you would have to drill through tile and concrete (?) wall.)

BKK Glory Holes
 

I see on Twitter that there are a number of Glory Holes being used regularly throughout Bangkok. Does anyone know where any of them are? I'd love to check some out on my next visit.

I’ve seen a lot of Twitter chatter about the Southern Bus Terminal, but can’t confirm from experience. It’s a long way to go from downtown just to be disappointed.