I’ll be going to WordCamp Sydney this year and best of all I’ve been approved to be a volunteer.
I’ve volunteered at a few DrupalCamps in the past and highly recommend you do it; especially if you’re new to the community. It’s the best way to meet new people.
And, this is the important part, it’ll force you to interact with others.
If you go to a new place with new faces it’s very easy to hide in the corner drinking coffee and not network with anyone. For me personally, volunteering puts me in a different state of mind and I have no problems talking to other attendees.
Long story short, put your hand up to volunteer.
A lot of these camps/conference need people just during the event to help with registration, monitor rooms or being an extra pair of hands.