Tips for wineries/tours & Unreleased

Hola! I'm traveling to Mendoza for the upcoming weekend as there's an event - Unreleased at Lomas del Malbec on Saturday. Any knowledge or tips on how to get there/back? Seems like it takes 40mins from Mendoza by car and not sure whether Uber etc. works in the city.

Además, the plan would be to visit wineries and renting a car is not an option as the drive limit is 00. Many of the wineries are super far, and wine tours I found online are many starting 200K per person, and not sure how much a private driver would cost but seems like a lot! We are two students on a budget so would be excited to know if there are any recommendations for more affordable options! Also other tips for Mendoza for hiking, eating or general information are welcome !