Two years ago (July 2010) my family and I (Me, Brian my wife Valerie and our son Adam), we live in Manchester, England, were holidaying at the Le Meridien Ile Maurice Hotel in Mauritius. During our 14 day stay, we met a married couple who were on holiday from Norway, staying at the same hotel, as us. We spent some time with them for an evening or so, and as they were going home before us, we did not see them at the hotel again. We did not exchange any information such as addresses or telephone numbers.
Last year (July 2011), my family and I, still living in England, were holidaying at a hotel on the island of Rhodes at the Club Atlantica Aegean Blue. Some days into our short stay (which was only for seven days), a couple approached us and asked whether we had stayed at the Le Meridien Ile Maurice Hotel in Mauritius the previous year. We were astounded to realise that it was the same Norwegian couple, who were staying in the same country, the same resort, the same hotel, and at the same time period as us.
Can the probability of this occurrence be quantified?