My 2 cents worth
We just got back form CSS. Aunt Flo was with us the first two or three days of the trip. We were sweating that worst case scenario possibility for a couple months prior after doing the math.
The simplest situation wound up being the best - "tuck and roll (with it)". Made it a total non-event and I am 100% confident that nobody else was even aware.
True that to what SuzyQ reiterated!
Totally a Diva Cup devotee here!
I want to thank you women who suggested the Diva Cup. Best product out there.