In an article http://tinyurl.com/bzmo in today's Toronto Star, Travel, it says:

...anybody who happens to be in Liechtenstein on Aug. 15 - the National Day - is welcome to join the 33,000-strong population invited for drinks and snacks with the royal family in the castle gardens.

This is what we wrote in our travelogue from our visit in 1997:

...off to Vaduz, the main town of Liechtenstein, with its castle of the Prince and Princess. Vaduz is an adorable place at the base of a mountain. We climbed to the top for a closer look at the castle but weren't even rewarded with a glimpse of the royals. The castle provided a nice backdrop for the photos we took of each other.

Cheers, Linda Toronto