If you live near a Cabela’s check out their Alaskan Guide series. Its not the cheapest tent, but its damn near bullet proof. Check their bargain cave – they often get returns that they re-sell at a considerable savings. Slumberjack and Kelty bags offer good value for the cost.
I offer the following as a way not to repeat the mistake I made as someone who grew up camping and married someone who was not a camper:
Make sure you don’t try and “rough it” too much. There’s no quicker way to turn someone off that’s never camped before by insisting that a long weekends food supply should consist of dehydrated food, trail mix and jerky. Having a larger tent (One you can stand up in and move around) will be worth its weight in gold if (and when) it rains and it allows you go with air mattresses if you wish. Pick a campsite that has showers and a bathroom. Let everyone bring what they want and most of all have fun.