Rules to follow in San Juan

1. US laws apply — ID required for alcohol; driving laws are US standard

Puerto Rico is a US territory and US federal laws apply. The drinking age is 21. Driving under the influence laws are strictly enforced. Foreign driving licences are valid but US traffic rules apply.

• Where: Legal
• Tip: Carry your passport as ID for alcohol purchases if under 25. Use standard US DUI guidance — the limits and enforcement are the same.