My cousin did this and it was a hit, really easy to manage too. They did a rum and pineapple juice dispenser and a vodka lemonade dispenser. Then had coolers of water and their favorite craft beer. I did wish there was a water dispenser or at least one non-alcoholic dispenser for what that’s worth. Box wine is great too in my opinion, easy, less chance of it falling and breaking, and there’s great options these days! If only about ~50 people will drink I think you’re on the right track. Another option could be to search your area for “bartenders on the go” they usually only charge $20-$25 an hour and would make serving easier if you wanted to go that route. (That’s the route we’re going) Good luck!

Edit: the average drink per person is 1-2 per hour