Hey ladies! We're taking our first vacation as a family of 4. In August we're headed to San Diego to chill on the beach, hit up SeaWorld and of course check out the zoo. I'm trying to work out the logistics of navigating big places like those mentioned with a 3 year old and our daughter who will be 7 months old come trip time. Do I drag the double stroller along or just use the umbrella stroller? Any tips or wisdom would be helpful. Thanks!