Translation:My daughter went to a party this weekend.
My understanding is that fest is a more neutral word for most parties (though especially adult style parties!) whereas kalas tends to be used more for children's parties/birthday parties or more whimsical events that are less adult... ie no alcohol, more "party food" etc!
I put “My daughter went to a party last weekend” should this be accepted?. It corrected me to “this weekend” however I’m interpreting it as being in the past not to future. I think both concepts are valid with “I helg” although “I helgas” is specifically last weekend. Does the use of the definite change this? I.e. does “I helgen” always imply “this weekend” I.e. the future? If not can we add “last weekend” to accepter answers please.