Thanks Ruf

Yeah, I've already said to him that I'm happy to stay for just 3 hours - 30 minutes of walking with 15min rest stops - which would still give us plenty of time to see things and do things. Also doesn't help that DH hates huge crowds
And thanks for the reminder bout taking my own drinks! I keep forgetting how expensive that stuff is, so it's a big bottle of water and plenty of little nibblies!