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Swiss Online Entry Form
If you've looked at the Entry Requirements for this tour (Tauck home page under Travel & Health requirements, then Travel Requirements by tour) you'll see this line:
All travelers must fill in the Entry Form at https://swissplf.admin.ch/home in advance of their journey.
There are a couple of useful forum thread on the Rick Steves travel forum about how to do this and a couple of confusing issues. Short version, to enter US phone numbers - put a plus sign then a 1 followed by area code and number. Also that we put the US as the country we departed from even if we had a transit in a European airport.
Hope this helps. If anyone has any other experience with this, please share.
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