Momo and Nana together: "Lots of times."
Momo: "Since I go completely bottomless pretty much all the time, I sometimes dont even notice. Yeah, my legs get wet, but that doesn't bother me at all so it's a pretty casual thing for me.
Nana: "I like wearing tights and shorts sometimes, so for me it does have more consequences, but it's still usually pretty casual for me too. But I'll admit, wetting myself while walking is a sensory nightmare if I'm horny and trying to hold back!"

Haru: "Just like mama, I do that casually when I'm bottomless sometimes. But... uh... me and Yuki both sometimes hold it in for too long and uh... we've both had a lot of accidents like that..."
Yuki: "... and those accidents are a huge turn on every time they happen! For me, there was one time on a walk that I tried pulling it out and peeing like that without stopping, and since it was out and flopping side to side, pee got absolutely everywhere! Lots of fun! I should do that more often..."

Fuyu: "All I will say is I've been there and seen all of this happen, and I have no interest in doing it myself."