Have I ever mentioned how much I love my husband!  He comes up with the best ideas!  I was/am still very torn about to to approach the store managers about this sensitive subject (yes I realize that I am dwelling on this far too much) and he suggested that I put out a "Tip Jar" instead of donation box along with my sign that says I volunteer my time to help keep events like this free."  I feel comfortable doing this.  YAY.