Breastfeeing

Deidre
Hi guys ! I have a question. I'm planning a shopping trip to get some mommy time away from my kids for at least 2 to 3 hours. I'm breastfeeding and I don't want to be out shopping and all of a sudden my breasts start to get full. What should I do ? Should I bring along my manual pump and pump for a few minutes while I'm out or what ?