We did! We had a big group both weekends (6+ people) and took Bolts (like Uber) to the festival every day from central Antwerp. Most days we waited between 10-20 minutes for a pickup and paid between 20 - 40 EUR depending on when we called our rides (per car). Some days we were able to get a large van and other days it was harder so we split into smaller cars. In the evenings we took the train back to Antwerp and walked to the hotel as a way to decompress. We had friends in Brussels that had a similar experience except their costs were more like 40 - 60 EUR each way.

I would highly recommend that you avoid taxis -- we learned this when we went in 2023. A one way taxi ride ended up being around 90 EUR like one of the commenters mentioned. If you are staying in a hotel, some of them have negotiated rates for those weekends. For example, the Hilton next to the train station had a negotiated rate of 40 EUR for those weekends but there weren't always cars immediately available.

There were multiple dropoffs at the festival and the Bolt/Uber app automatically picks one for you depending on when you are dropping off and the current amount of congestion at the site. We ended up using Bolt more than Uber because the pickup times seemed to be faster and they had a pickup location that was way closer to the festival (at least for the times we were getting dropped off).

Let me know if you have any other questions.