Hi goldendoodle! I've seen some really cute lighting ideas for outdoor spaces on Pinterest. One clever pin showed heavy duty poles planted in buckets of concrete. When dry the bucket is cut away and the concrete bases can be painted or stained. Then you can string lights between 2 poles. I like that they're moveable and not permanently installed.

This application is rustic but you could change that to a different style by using other materials.

For temporary shade I agree with umbrellas but you should also get some trees planted. My favorite midsize trees are crepe myrtles but I'm not sure if they are appropriate for your part of the country..

good luck and enjoy your summer!

PS - your name implies there's a goldendoodle in your life! I'd love to see and hear about him/her! Such adorable dogs.