Yes!
-Dress warm and bring some kind of pad for under your sleeping bag. The floor is concrete and gets really cold at night.
-They have food stalls outside of the Basilica but it’s insanely expensive for a very small amount of food. Bring a lot of snacks. The alcohol they serve inside is pretty affordable but I always bring a bottle of whiskey with me too. The town is within walking distance and there is really good food there too.
-Get there really early to get a good spot.
-If you plan on sleeping even a little bit definitely bring those strong ear plugs. Last year I wore earplugs with noise canceling headphones over them and it reduced the loud harsh noise to a pleasant hum.
-For me personally, it helped to take frequent walks away from the noise. I found that it wasn’t as enjoyable once the ear fatigue kicked in. I’m pretty sure I didn’t enjoy certain acts that I normally would have been into because everything just becomes a nebulous, homogeneous blob of noise. This is good for meditative purposes but not really great if you are trying to enjoy a live musical performance.