@Memles - totally understand why, and that barriers are easy assuming there's a door for the snack shop and the gates near the fountain are functional.
However, as awesome as Alpie is, I believe there's a lower height limit on the flats and other rides in the other direction (not opening Festa or even necessarily the pathway past DaVinci gardens towards Marco Polo's) even if EfP stays closed.
Also, I'm betting that it'd be easier to manage downtime with the flats since even if 1 of the 3 goes down guests can easily get in line for the others - if Alpie goes down then I guess they reopen Le Scoot, which then again could already be open if Invadr goes down.