There would probably be lots of angry protests if that were to happen. Just imagine the newspaper (Mail) headline:
"Breaking News! Alton Towers to close down for a year!"
Would be the most sensible thing though. The whole “resort” shut would allow everywhere to be spruced up and focus on either “tlc” or replacing closed things.
Then reopen with an attempt to show we’ve listened and refreshed our offerings.
Of course above would never happen as someone at Merlin would say we aren’t making and money while shut