This concert has an age restriction of 18 and up, meaning only individuals aged 18 or older are permitted to attend. Stable Hall Presents It's A 2000s (Halloween) Party: San Antonio. GENERAL ONSALE 9/23 @ 6 PM. The floor of this show is general admission and standing room only. The mezzanine is fully, reserved seating. Details on seating configuration for this show: Floor – GA Floor Standing Mezzanine – Reserved Seating Hayloft – 1st Row - This ticket includes a reserved seat in the hayloft with cocktail service. Hayloft – 2nd Row - This ticket includes a reserved seat in the hayloft with cocktail service. It’s A 2000s Party & Slacker University Marketing Opt-In Purchasing tickets from this show will sign you up for marketing updates from It’s A 2000s Party & Slacker University such as new show announcements, exclusive presales, ticket discounts, and more.