You said wearing and taking off a hat right? Try clipping your roots up like the CG method suggests, so that when the hat comes off, you remove the clips and get nice definition and volume!
Another tip: pack light. Fill a travel bottle with a conditioner you can use as cowash, detangler and leave-in. Fill another one with either water or a light refresher if your hair really does lose its shape here and there.
finally starting to love my hair ^.^

cleanse: Dr.Bronner mild castile soap
condition: tresemme naturals (sometimes used as styler)
LI/style: curl cream mixed with coconut oil (current cream by andalou naturals)

product minimalist