Ensure every family member has a passport valid for at least three months beyond your planned Schengen departure (and ideally six months), with a few blank pages, plus paper/digital copies; check whether your nationality needs a Schengen visa (many countries, including UK/US/CA/AU, have 90‑day visa‑free stays) and any upcoming ETIAS/waiver rules that may apply; there are no routine vaccination requirements for Switzerland but keep routine immunisations current and consider COVID boosters if preferred, and carry EHIC/GHIC or comprehensive travel insurance for medical cover; review your government’s travel advisories shortly before travel (local strikes, weather or security alerts can change) and be aware of entry customs rules—declare cash over €10,000 (or equivalent), limits on alcohol/tobacco and some food/plant items—and for children travelling without both parents bring birth certificates and a parental consent letter to avoid delays.