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Thanks, Pippa68 and 4getmenot. I'm new at this Croc wearing game! The instructions said, give them a wash, dry them and apply Croc Butter to keep them looking nice.
I've only been back a couple of days, so I've not had time to go shopping: I'm still jet lagged.
Pippa68: you're right. Once you get your Freedom Pass, comfort is a priority. I did, however, wear my Crocs to clubs in Toronto: I was dragged there by my daughter and I only went on the understanding that I could wear them!
4getmenot: I haven't completely gone mad. I bought very sober colours: navy, black and brown. Very respectable for going round Sainsbury's!