They sell sweatpants (they call them "yoga pants") and tank tops, but that's probably not what you meant. As far as I can tell from their website, the only kind of bridal sleepwear they have is the kind preferred by most grooms: nothing at all.
They do have a lingerie section, but it appears to be mostly of the slip and girdle persuasion, not something you'd want to sleep (or "sleep") in.
Some of them do.
No.
DABR
Yes
No
It doesn't matter.
Call them first.
Yes! You don't necessarily need to go to a bridal shop.
No, they're still in business.
Monica Arizmendi
online or at their outlet
Possibly as a summer job.