What comes with the Toxic VIP experience tickets for Britney Spears' Circus tour?

I bought a toxic VIP package for Britney Spears' Circus tour, does anyone know what the pre-show party means?

Additional Details

I know what the whole package contains but I would like to know what they mean by "pre show party"





Answer :
* 1 VIP General Admission Ticket
* VIP Preshow Party!
* VIP Back Stage Tour!
* 1 Parking Space
* Separate VIP entrance** (where available)
* Exclusive Britney Spears Tour Gift Item
* Limited Edition Tour Laminate
* Commemorative Ticket Stock