Crocs レディース ライトライド 360 ペイサー ウィメンスニーカー

Do these sneakers have arch support?

I’m confused because it says they are waterproof but there are holes throughout the top of the shoe… so is the bottom just waterproof?

Are these all the way waterproof?

Are these good for walking? Looking for a good supportive shoe for a trip coming up