I do wish there was a little less pressure on the CM's to get a specific (high) number of riders through each hour.
We rode Primeval Whirl in May and it's just my husband and me, but we're both bigger - though DH is bigger than I am. Usually when we ride Primeval Whirl, it's just the two of us in a car, and we each sit comfortably on one half. We never ask for this arrangement, it's just how the CM's have always assigned us. It's nice to have the little bit of extra room on a ride that throws you around so much, plus with each of us having our own lap bar, I'm able to pull my down further. On rides like BTMRR where we both share one lap bar, it stops where it's comfortable for DH, which leaves me with way too much room.
This time when we rode PW, the man in line in front of us was a single rider, and the CM directed him into a car and then waved us on with no real direction. We started to get into the car behind the single rider and the CM snapped that we couldn't ride in that car, we were supposed to be in the same car with this guy we didn't know - which was now nearing the end of the conveyor belt, so no real time to think or discuss. We got into the car as instructed, but the stranger was already in his seat with his lap bar down (and even if he weren't, one of us wasn't about to cram into that half of the car with him) so both DH and I had to sit on the same side of the car, and we didn't really fit - which meant DH was half on top of me and I was pinned against the side of the car.
It was the most painful, uncomfortable ride I've ever been on, and honestly the CMs should've seen that this arrangement wasn't good before we ever left the station. Nevermind combining parties, but overfilling cars just to stay on top of their numbers can lead to real issues. I actually hurt my shoulder against the side of the car because of the position I was riding in, and we mentioned it to another CM as we exited the ride, who actually let us ride again immediately in our own car - which, while INCREDIBLY appreciated (it's one of our favorite rides), had to throw off their riders per hour quota, in which case I wish we'd just been assigned this way from the get-go and it never would've been a problem at all. Mine wasn't a serious injury at all, it was just sore, and we only mentioned it to the CM to try to make them more aware of how they were loading the cars - but it could've been worse for someone else.