You say in spanish, as well, "menú del día".
El menú
"Kids' menu" can be expressed as "menú de niños".
"La carta" or "el munú"
To be polite you should say, 'may I have the menu please'?
menú, carta, lista de platos
the same way - menu
'Lunch menu' in Spanish would be: 'menú de almuerzo'
One option is to say, "Qué sirven ustedes esta noche? literally, "What are you serving tonight?"
Menú
'May I have the menu please' would be polite.
¿cuál es su menu hoy?