Directionally challenged follow up

Follow up to the trip with Tweedle Dee and Tweedle Dope.  I arrived home the night of the dry run and there they were... sitting in my living room.  So, I said.  "Did you find it using MY directions?!?"  Uh, no.  "We ended up on Trabue, so we came home".  I finally figured out with the help of a friend that the major problem here is that they can't tell which way is left and which is right.  So, on Tuesday I sent my mother and Brenda to the doctor and then to meet me for dinner with a post-it note containing a bit L with an arrow and an R with an arrow.  They made it to the doctor and then they made it to Old Bag of Nails but not without calling me from Macy's parking lot to see if they had missed it.  Macy's is on the LEFT and almost right at the corner of Fishinger and Tremont... I thought I said "Old Bag of Nails is on the RIGHT about a MILE down Tremont".  OH well, live and learn and LAUGH!!!