You know, I've always suspected (this is me speculating, this is not a hard truth or something I have anything other than some anecdotes) that the way the show makes it up to contestants who travel specifically for the show, but the show gets cancelled, is possibly guaranteeing their spot as contestants.
Back in 2010, I talked to a gentleman in line, and he told me he was part of that Price is Right Contestant Search from the early 2010s. You know, they would go from town to town, interview local people, and then pick two people to come to the show from each town (the idea being to continue uncertainty on whether you would be called by having a second potential contestant from that town).
Apparently, Drew was sick the day of his show, which was disappointing since he brought a group of friends with him and everything. So, here he was in line, trying to get on the show the old fashioned way.
He was called down first that taping.
Mind you, that's just a thought. It could have been a situation where if the show was willing to pay your travel to come to LA, then they were certainly going to call you down if your interview was still solid and you came back on your own dime.
For the 30+ audience members who interviewed online, I'm not as sure about, but production has EXPLICITLY said during tapings they do take into consideration people who attend multiple times. Why shouldn't it apply to multiple interviews?
Another caveat: I remember this during my own taping when folks were exiting the studio, but they needed audience for the afternoon show, so I'm not sure if they just needed free audience space to fill and needed something to tempt people with, or there were some people who weren't called during my taping that they wanted to have in the next.