I'm guessing that you won't have to carry your stuff very far. If that's indeed the case, you don't need a very expensive light weight tent; if you have to buy one for this trip, a cheap one from Walmart or similar will do.
Mind you, in my collection of tents the cheap one from Walmart suffered a little from seepage along the seems even when it was new. Not a big deal, I just kept my stuff away from the walls of the tent, and that was enough to stay dry in a thunderstorm. It's 15 years old now, and only useful when it's practically dry.
If you plan on using your tent more often, and perhaps hike with it, things like low weight and the ability to withstand a serious downpour will become more important. But then you're looking at prices starting around $300 just for a two person tent. To give just one example of an excellent one for this purpose: the
Vaude Hogan Ultralight. That's the one I bought just over 10 years ago and I'm still using it. But you write 'friends', meaning that there will be at least three of you and then this one would be too small. Nevertheless, it illustrates the price difference between a cheap tent and a high quality one.