Formula question

We have been using the 2oz enfamil ready to feed bottles but will run out tonight. So we got the 32 oz big jug to use going forward. With Christmas coming and going to families houses is it safe to carry around some pre made bottles in the diaper bag after I split up the 32 oz bottle? Or will they go bad out of the fridge while we travel? Should I be putting them in a cold pack or something in the bag until she is ready to eat and then warm up?