Interestingly (and maybe related) Thorpe Park issued a clear announcement as we were entering this morning that masks should be worn at all times except when eating in a restaurant. Perhaps this reflected a change in rules.
This was ignored by perhaps 95% of people and those of us who started out by complying then (rightly or wrongly) gave up on this later in the day. Announcements in queue lines were more along the lines of what we have heard at Alton (stay socially distanced, mask on rides and indoors).
That said, considering beers were being sold for queue line consumption (I believe this isn't the case at Towers) I think trying to enforce it would have been pretty laughable.