Too many relevant variables;

Who is playing? Who are the headliners? The openers? How far in are we? What type of venue? Is this an all weekend festival? How expensive was it? Do I know anyone here? Did I come alone? Do I have a cell phone? A wallet? What time of day is it? How many drugs are present? How much alcohol? How much have I had (if any)? 

Is there a gift shop? 

It's p common for concerts to have those, I'd probably check that out if I had my wallet. get a cheap makeshift belt or something. If I'm with people I'd see if they had something first. If everyone's turnt no one will care.

t. Neurosis