Lake Bled by night with Castle lit up

We happened upon Bled Nights, a festival at Lake Bled, last night. They launched 15,000 lights in little egg shells onto the lake (the row of lights horizontally along the bottom of the castle are these lights--they spread out more as the night progressed) and set off three little hot air balloons into the night. The evening was capped off with a great fireworks show.

We stationed ourselves along the lake to wait for the light show which we thought would start at 10pm (per a conversation with an older gentlemen who didn't speak English), but it didn't start until 11pm. No worries, we sat and threw little stones into the lake as we waited. At one point, there was a strange set of lights flying low along the water. We surmised that this must have been some sort of remote controlled aerial camera capturing the candles in the water or else a UFO.