I haven't been down to MIR in years and I am going to take my family to watch the Jet Wars. I noticed they now sell tickets online but is it really necessary to buy them ahead of time? I never had a problem with an event selling out down there but it has been probably at least 15 years since I've been. I don't see a point in paying a processing fee if I can just buy them there without worry. I'd still probably be standing in line at will-call so I doubt I'd be avoiding anything.