21.   Tickets on Eurostar require a reservation at the time of purchase.

22.   While many of the shows require advance reservations, many programs also offer standby seats.

23.   Several foreign travel agents said the booking companies are requiring reservations for stays well beyond the Olympics or requiring package room deals that include meals or transportation.

24.   Synagogues are so crowded that many require seat reservations, but by tradition, no worshipper is turned away.