Liney--Bubs are gorgeous!!! Such big eyes!
laned---You can still call the scientist direct, they won't mind at all. The only reason to call Wazza's rooms is to see if Wazza has any opinion on the status. Do you have blastocysts frozen? I think they need overnight to let frosties expand fully from defrost. If there's nothing from the fresh batch, they can thaw one on the morning of ET, but it just won't be fully expanded (will look a bit wrinkled etc) and they won't be able to tell if it's actually any good until it has expanded.