I wonder if Towers are carrying on with theirs?
Oktoberfest is a blast. Most friendly beer drinking event I've ever been to. It's really a conglomeration of all travelers, which is completely fine.
Alton Towers are still promoting their Oktoberfest event, which suggests they plan on it going ahead.
It must be noted that the Thorpe event is being marketed more towards the 18+ demographic, whereas the one at Towers is heading for a more family friendly approach.