M.H.
Hello K.,
We started tent camping with our daughter when she was 9 months old. I took a pack and play (so she could be safe while with worked around camp) and I also took a chair that attaches to the picnic table - the kind you take to a restaurant. These items help so much I'd never camp without them for a young one.
I haven't tent camped around here as we upgraded to a travel trailer when we moved here - but there are some awesome camping around here. Our favorite for ease of travel and nice setting is the Tolt McDonald Campground in Carnation. It has a great play field, clean and wonderful hiking trails - along with a playground nearby at the baseball fields. We only gone once this year - there were only 6-8 sites available, they started some renovations work for the salmon and a lot of the sites are torn up, so you may want to do a drive by to see how it is doing. The tent camping is in a field that they mow - so the long grass grows up and around your site for privacy - which is nice, but minimal shade - I remember once site near a big oak tree - that one look nice.
Another campground nearby is in Snohomish - Flowing Lake. This campground is on a lake - a 3 - 5 minute walk across the parking lot. This site is heavily wooded so there is great shade, along with really neat trails around the park. The lake has a really nice grassy beach along with a play structure. I'm not sure if the address is Monroe or Snohomish - look up Flowing Lake and you should find it.
Best of luck to you!
Positively,
M.