Travelers visiting Italy and Spain should ensure they have a valid passport with at least 6 months validity. For some nationalities, a visa may be required, so it's important to check with the respective embassies. Additionally, it's advisable to stay updated on vaccination requirements and travel advisories, especially amidst the ongoing COVID-19 situation. Entry restrictions for foreign visitors may also be in place, so it's best to verify these details before planning your trip.