What a fabulous time! I Highly recommend going to Wild Waves and Enchanted Village! It has everything you need to enjoy a day in the sun in Seattle. The village part is well shaded in the tree making it comfortable during the hot summer days and the wave park has something for all ages. We really enjoyed ourselves. We did spend the extra money for the cabana and felt it was worth it for 2 families with little ones. But if you plan on going often the cabana is a spendee habit. There really is a ton of patches of grass you can grab just depending on where you want to sit. If chairs are important and shade, get there before the park opens to get in line. There is very limited shade near the pools and all the chairs will go within the first 20 mins of the gates opening. Good idea to consider when you go is to pack a cooler full of lunch and drinks in your car. And head out during the day for a tailgate. They give you a stamp so you can come back in. This can save you money on food. Also there will typically be at least one ride not working but I think that is par for the course for amusement parks. Bring coins for lockers. Have fun!