Ravello certainly is a breathtaking place! While the venues on top of the hills make for a great view, there is no access for vehicles to reach many of them.
For the steep, narrow streets there are specialized transport companies which will be included in the transport fee. They transport everything from luggage to drum kits.
Please consider this when booking a band for Ravello, but also for your guests if you plan to spend the night in this beautiful place.