Absolutely huge family tent that we bought in 2004, has been used most years since and is now far too big for our needs. As you can see from the camoflage tent in the photo, our teenage kids prefer to sleep in their own space these days, so we've bought a smaller main tent that better suits our needs.
This is a Vango 600 tent and there are a million online reviews of it if you want more details. It's basically a huge central dome with two side bedrooms and a long entrance tunnel. I'm 6'7" and can stand up easily in the dome, giving you some idea of how tall it is.
We've slept in it just short of 250 nights over the years, so this has been well used. However, it's survived seven named storms without catastrophe, often when the surrounding AirBeam tents were completely flattened. Such a long life and stormy history has left it with a few minor bits of damage, none of which affect its usability of waterproofness:

1. A tear on the top, which is fixed with tape.
2. A worn tent pole tunnel, again fixed with tape.
3. The door zip opening from the main dome to the entrance tunnel starts to unfasten in strong winds.
4. One of the resin tent poles has split end to end and been taped back together. This fix has been fine the last two years, although the added friction does make it a bit harder to feed into the pole tunnel during assembly.
5. Finally, I stupidly left the entire bag of tent pegs at a campsite in Cornwall last summer, so the new owner will need to buy a good three or four dozen. I just looked on Amazon and they're cost you maybe £20.

This has been a huge tent for our four-person family, has easily slept up to eight when the main dome is used and has been a joy to go on holidays in. Despite its age, it's clearly got at least five more years of use left in it and maybe even more. What could your family do with it and where might it take you?

Vango 600 family tent (Oldfield Park)