I've bought tickets over a month in advanced. When you purchase online you'll have two options, will call (pick up at theatre) where you'll need the order number or card you paid with I believe. If you're a member you can hand them your membership card. The other option is digital tickets that come in an email as a PDF. I'm pretty sure once you pick up the tickets from will call though that you can't then get them as a PDF too. Buying online and having The tickets as a pdf in your email is probably the safest way to go if it's very ahead of time.
Yes u can by going on the website making an account and it's fairly easy after that. Or you can go to the theater and buy them before the show
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