Receiving on Monday and Tuesday is for two shows: Reused / Recycled and the All-Media Membership show. This means you can bring in 2 pieces per show, or 4 pieces, to be juried.
If you are unsure if your piece fits the Reused / Recycled category, it does not hurt to submit it. The staff will not eliminate anything because it is not fully recycled materials. All selections are up to the juror. On your label, make sure you list all materials that are reused or recycled, in the event the juror should ask.