We already had a bridal Oncidium gacha. And it was one of their better deals too. I wouldn't expect her again for a while.

Originally Posted by Drip

Wondering whether we can roll it only once, or multiple times. And even whether we could pick the same girl multiple times (usually that's not possible)

Read closely. It's a single 11-roll for $30, THEN you get a ticket to exchange for ONE of those four. Traditionally you can't double-dip on ticket gachas to pick another, except for the one time they let you pick from any gold three times.