Quoting Devil Duckie:" if everything wasn't alright in there, they would order more. I think you can wait 7ish weeks. 3d ... [snip!] ... worth the money. The pictures will end up in a drawer and at 80-200.00, you can go buy yourself or the baby something nice. "
Unless you just have the extra money. It may be worth it to you then. But honestly, as soon as LO gets here they won't be that special.
We were lucky to get two 3d mini sessions at the hospital because they had to do regular US to check baby due to extra fluid. SO the tech switched to 3d quickly for us and took pictures.
I know it seems like you need to see LO but it won't be much longer!