Foreign Supermarket (lunchtime of 02/09/2013)

I am in a supermarket in some foreign country. I am not sure what country it is, but it has the feeling of somewhere hot, perhaps Spain or the coast of Tunisia. I am with someone else - perhaps my sister - and we are sat on mattresses. I go to sleep for a while on a mattress, but wake with a start. Is it right to sleep on the floors of foreign supermarkets? I remember looking down an aisle where a sign hangs from the ceiling. Though the sign appears to be in English, I can't read it.