So, I actually did a version of this last Nov. My sister & my boys were on 2 ressies (hers & mine)- BCV & RIV. I was afraid it might cause problems & warned her about it. Weird thing is that her bands worked on both doors with no issues- we never even talked to the front desk about it.
Our boys, however, had a crazy experience: my 14-yo & her 12-yo
had their own magicbands (we triple-checked!), but they kept reading
as the other boy ... so her boy could unlock our door, my boy could unlock her door, and it even
swapped their names at the parks!! It was the weirdest thing ever! We tried talking to the BCV front desk and to a cast member at EP, and everyone was baffled. It really didn’t matter for our trip, but it made me think twice about doubling up on ressies in the future.
You also run the risk of having double charges when you use your MB’s. Some of my sister’s charges did end up in my RIV portfolio... thankfully none had been duplicated, but it required more work.
I’m thinking in your situation, the easiest thing would be to not add that res to your
MDE. That way, your MB’s are in no way linked to that room. All charges continue to go to Kidani, and all MB’s work without issue at Kidani. Just go to the front desk and get keycards for the day/night @ BCV. You’ll still be able to get into SAB without issue. No need to create mock MDE’s, but do use a different lead guest name for sure. IMO, it’s better to keep it simple
