We'll be at BLT 3/22-3/26 so this may completely affect us. That said, we plan on spending at least two of those days at MK so no big deal there (we always walk there from BLT) and we have ADRs at Cali Grill, Artist's Point & Kona. So it may affect our Kona reservation, but we'll survive. Frankly I think it's better to have the advance notice because then at least you know the park is planning for the added buses and boats, whereas when the monorail suddenly goes down you can get completely mobbed in that line with no way out. That said, I'm a little bummed I won't be able to watch the monorail whoosh by the hotel all day!