Manners in Luxembourg

Greetings

Multiple official languages, so greeting in French first is safe.
Punctuality preferred; lateness to meetings or meals considered rude.
Glance at business cards before putting away immediately after receiving.
Address with titles (Monsieur/Madame) in formal settings.
European-style knife and fork for meals. Tear bread directly on plate.
When pouring wine, turn bottle label upward.
Loud phone calls or queue-jumping in public disliked.
Dress modestly at churches and monuments.
Service charges often included, but leaving 5-10% rounding at restaurants is polite.
Ask permission before photographing people on streets or in shops.