W3n, no additional cost for having 2 diff colors of invites, according to roseline, we can mix and match the colors as we like. No need to make appointment, but quite crowded on weekends, I went down around 2pm, still ok, but after I finished, there are 3-4 couples q-ing already.
Jus spent 4 hrs at my BS trying my AD gowns, so tired! Managed to shortlist 1 WG n EG, but I will go down to try the new arrivals next month before confirming..