Annual fiesta procession route. In San Carlos. Every barangay and town has an annual fiesta tied to its patron saint — processions, sound systems, basketball tournaments, open houses where families feed anyone who turns up, and food cooked at a scale that isn’t seen the rest of the year. It’s the single best time to see how a place actually works socially. WHAT TO DO: fiestas are genuinely open — being invited into a stranger’s house to eat is normal and refusing is worse manners than accepting. Bring nothing, eat something, don’t linger past your welcome. NIGHTLIFE: fiesta nights run far later than normal town nights, with dancing and drinking that goes on well past midnight. SAFETY: drinking is heavy and crowds are dense; the risk isn’t crime so much as alcohol and traffic. Accommodation fills for days around a fiesta — book ahead or don’t plan to stay.