I like that the organization of the volunteer sessions and the people who work there because they are positive and patient. If you have any questions about an activity, don't hesitate to ask so you can clear up your confusion.
What I wish was different
I wish that I had decided which days I would have volunteered on sooner because a lot of the positions on the calendar for sessions fill up quickly, sometimes weeks or months in advance by more sizable groups of volunteers.
Show up to your volunteer time, and if you can't make it for whatever reason, call or email them so they know they'll be short of people. I wouldn't recommend going to a packing/sorting session if you don't feel well, like your muscle are sore or you feel sick because the jobs require you to be active.