We always used a Eureka timberline 2 person for the kids and a second tent for mom & dad. These tents have space for a bag as well as your sleeping bag, but if you really want to spread out you could use the four person size for two. They’re durable tents (I have also used the outfitter version with a camp/outdoor ed center where they’re used with middle schoolers week in and week out)

Edit: I’m still using the same tent from when I was a kid, nearly 30 years later. Seriously! I’ve replaced the bungee cords for the side tie-outs, as the originals turned sticky, and got some new stakes, but otherwise it’s in great shape.