Sunscreen questions

It's finally starting to get warm where we live and I'm so excited to have some backyard adventures with my baby girl.

My question is: if I put sunscreen on her I will give her a bath before bed that night, but do I bathe her each time we come inside before a nap? Wipe her with a wipe to get most of it off? Leave it throughout the day until her evening bath?

I'm planning to do a few 20-30 minute walks/playtime's outside a day so I will definitely be reapplying throughout the day but wasn't sure if it matter if I wash it off between or If I just wait to see how her skin does?