Complain all you want about everything else but maybe donβt complain specifically about a shortage of volunteers at the volunteer run event you are attending if you do not plan to volunteer.
Honestly people really need to realize that cons, especially the larger ones, could use a lot of support from their attendees, and one of the best way to support a con (and stave off boredom between events you plan on attending) is volunteer. Heck, a lot of cons even have benefits for volunteers!
This being said. Furry cons should seriously consider switching to an electronic solution for attendance badges. Because cons are so big now.
Personally I think a solution would be sending attendees a QR code to their phones that they can then get scanned when they walk in con spaces.
People just love to bitch, pretty sure the con I helped run had a core group of people who only attended so they could bitch, and whine how it's changed...