Thanks for the trip report :earth_americas 
Glad you liked the packing cubes. We may need a link for those Sketchers washable black sandals.
I don’t think I’ve yet posted my carry-on backpack hints. The charger for my cellphone goes into a bright narrow red plastic bag (from newspaper deliveries). I have an empty small plastic pouch to use if I stash my cellphone - it also includes earbuds and earplugs …. tis handy at the beach later to keep sand out of it. In one of the front pouches of backpack I keep a ziplock bag with a stash of snacks (granola bars etc).