I asked my family this ... DH answered without hesitation "In a line." (He's not really a big Disney fan).
DS answered "in the pool at the hotel." He's the reason that it doesn't work for us to say "Fine, if you can't walk, we're just going back to the hotel!" - because that's exactly what he wants. Meanwhile the rest of us would like to get something more than 5-10 minutes out of the expensive park tickets.