It is strongly recommended to apply for a Liechtenstein Tourist Visa at least 3 to 4 weeks before your intended travel date. The standard processing time is 10 to 15 working days, but it can extend to up to 20 working days during peak travel periods. Applying well in advance gives you sufficient time to gather all required documents, address any queries raised by the Swiss Embassy, and make alternative travel arrangements if necessary. Applications can be submitted no earlier than 6 months before your intended date of travel and no later than 15 working days before your departure date.