The Proper Picnic, based in Williamstown, NJ, offers luxury picnics in the tri-state area. Packages include: Basic Picnic: $160 for 2 guests (1 hour) Deluxe Picnic: $250 for 4 guests (1.5 hours) Premium Picnic: $350 for 8 guests (2 hours) Marriage Proposal Package: $300 with additional features. Extra guests can be added for $40 each.