Are you sure CB? That would make them pre-2012? (when she was 13 if we believe her age, which of course we probably don't )
I thought that big tent was World of Boats and there are reviews on Tripadvisor suggesting it's still there in 2017-19, though the museum bit seems to have disappeared more recently.
I think I owe an apology to all, but still a little uncertain.
The World of Boats is still there but there is an extention in front of it with a small bar and diner that have been there for a good few years, which do not appear in the photo.
I can't get into a similar location to run a proper check.