Traveling for a long weekend

Di

My brothers wedding is in October and we will be traveling 8 hours away. I am returning to work in a week and have been pumping. I plan on doing a combination of pumping and breastfeeding between now and then as well as that weekend. Trying to plan for the weekend away with baby and for the return to daycare the following day. Can I freeze milk that has been refrigerated previously? (Like what I had pumped at work Thursday and thaw for the day we return?) I have already started a freeze stash but want to make sure no milk is wasted and that I am not stressing during the weekend. Any help appreciated.