playing in Main Event...how long should I book hotel...buy roundtrip?

[rainonacongadrum]

I'm playing the Main Event and am confused about whether I should go ahead and book my room from July 5-17 or whether I should just book it for a few days since I don't know when I'm going to get knocked out. Same dillemma with the plane...don't want to buy roundtrip and have to wait around for a week if I get knocked out on day one...but I don't want to get ripped off on a ticket either. What's everybody doing?

Also, if I book from July 5-17 will I just be able to cancel if I want to leave on the 11th or something?