keiko, MS GHA is part of yishun, their gown selection is very limited so after all, you will have to go down to yishun to select the gown and during photoshot time.
I find their collection alright, some very nice. Depending on what kind you are looking into. Mine are MTM.. so i just need to find for PS gowns. I am not sure if you can request for any co-o or they r assigned to. My co-o is a male not a female, we kind of click with him.. so we got him as our co-o, i know alots of lady are particular about getting a female one.. if u dun.. you can ask if he is available. He is cole.