I don't always wear my hair wavy when I'm on a trip for this very reason! I am an overpacker by nature so I try to limit my beauty/hair stuff. I would pack a full size cleanser (low poo), a smaller bottle of a rinse out, one curl enhancer and one gel. I don't diffuse and I would probably only wear my hair wavy every few days.
Definitely bring some hair accessories like headbands since it will probably be very windy!
Medium texture, normal porosity, normal elasticity, very weak waves.
shampoo: Redken Fresh Curls
rinse out: CJ CR, TN
jellies: UFD's CM, KCCC
gels: CJ CQ, BRHG