re: ccb and sibling vials. we already went down that route when i was pg with ds1. they had no vials left! we lucked into 6 more vials due to another client reactivating our donor and used those for dp to get pg with ds2. i have to say that if a bank has clients on the call list for any donor vials becoming available, wouldn't it be a good idea to contact them if another client decides to reactivate that donor? apparently they don't even consider that. anyways, another option (if you are using an re to get pregnant) is to store vials there. in our case it turned out to be more cost effective to store our vials at our re's office than store them at ccb. so all our remaining vials are there and we pay a yearly storage fee that is a LOT less.
one more thing to consider. when we started planning for dp to get pg, we contacted ccb about getting the vials shipped and then they told us that i would need to transfer them from me to her which would take paperwork (which could take several months to process) and a fee. i was mad. they don't consider you a couple. so here's what we did to get around it. i had our new re send in the form to ccb. i shipped the vials we had left in my name to our re's office then signed over the vials to dp using a notarized form. then dp opened her own account for the vials of the alternative donor we bought.