Looks like the current standard is 11-11 but a internal debate is happening at corporate so they can guarantee it will be that way for any particular sailing.
from the concierge-
Yes, for the moment we have the same beverage service , beer, house wine, water and sodas from 11:00 am till 11:00pm, Although, as this is a topic that has been on discussion for a while, we don’t promote it, as at any sailing Head office may change it. Reason why we CAN’T guaranty it for your cruise.“