Online booking 7 month window

[Mich Mouse]

What time can this be done? Midnight or do I wait until regular business hours?

 

[erionm]

The on-line reservation system rolls to the next day around 8am eastern.

 

[Missyrose]

What time can this be done? Midnight or do I wait until regular business hours?

At the opening of either window (11 or 7 months) you can start making online reservations at 8 a.m. or call MS when they open at 9 a.m. (both are Eastern time).