In that case, make the amphitheatre round...you could have it be multi-functional then. Put the animals in there for the local fair to judge who's got the biggest pig, put some wrestlers in there for the local olympics-style games. A traveling troupe could set up there for a week or two. Stuff like that. I think too much about the reality of things so don't mind me...I'm more of a thinker than a doer. Cheers, mate.