Marilyn, your pitty pat heart should command what your feet should do while at the various nurseries...
I have taken semps on the airplane by removing most of the soil and leaving the pots behind. I then place all the semps with little soil clinging on and place in plastic bag.
Did this when a succulent nursery was going out of business and the wife of the deceased nursery owner opened her husband's private succulent collection to be sold off piece by piece to the public...
I'm looking forward to meeting the (in)famous CDs Sister too...
