You mean Spanish?? Mexican is not a language..
please come in
unni unni
They say please call again because this is a more formal and polite way of saying please come again. This was the old fashioned way of stating the same thing.
Meen fadlak hena
doya kore bhetore ashun
Por favor, vuelve.
It is " please, come in, sit, stay
dayavayi ningalk ivide varamo?
kommen Sie bitte hier.
"Se sau" - translating the idea/meaning: "Please come". Please is really "fa'amolemole". There is really no word to translate "se" in this context. When you say "Se sau", you are pleading for someone to "please come".
In Mexican Spanish, you can say "bienvenido de regreso."