En inglés sería "are we meeting tomorrow?" o "see you tomorrow?" Normalmente esta expresión se dice "hemos quedado mañana" (sin "para") y se refiere al futuro.

Hola Rocío, Simplemente significa: "we have a meeting for tomorrow". Haz cualquier pregunta que tengas con confianza. Saludos.

The speaker means he/she recently agreed to meet someone the next day.

It may be "We stayed and the next day"

we have a deal for tomorrow see you tomorrow It depends of the context, but I don't think 'we have stayed for tomorrow?' would be right