Thank you!
Car seat and stroller are checked free. But a pack n play I don’t think counts. So you’ll have to call or Google and see if it is. If they are a nicer brand I’d get a bag for them. We usually put them in bags. But this last time we have a Facebook marketplace stroller so it’s older and kind of dirty then I didn’t care to have a bag. You can also gate check the stroller and car seat. So I’d suggest. A travels stroller if your child is still in the infant car seat
I would recommend a travel bag for each just so they don’t get gross/prevent rips. Also check with your airline as most only allow 2 baby care items to be checked for free