ag deireadh na seachtaine
You can't say "At the Weekend", it's not proper english. You can say "on the weekend" if you mean, for example, "we can't go to Disneyland today, but maybe on the weekend we can."
deireadh seachtaine seo caite
I believe that "Bain taithneamh as an deireadh seachtaine" is "Enjoy the (or your) weekend".
le weekend
In Tagalog, you can say "Magandang weekend!" to wish someone to have a good weekend.
You can say, "Have a great weekend, everyone!" Alternatively, you might say, "Wishing everyone a fantastic weekend!" Both options convey your well wishes for the weekend in a friendly manner.
Prettig weekend!
Have a good weekend
We do not use "at" with days. We say "on the weekend" or "for the weekend." Go picnic on the weekend.
how do you say my country in irish
le weekend je porte
over the weekend.