your best bet is to zoom into the brightest bit of the nightscene, then take a meter reading - if you use Av/Tv or M exposure modes you can do this - and dial in an exposure of about +1 - +1 2/3. Lock the exposure there
Then zoom out and take your shot at that exposure.
If it's a bit dark, then up the exposure a stop - keep doing that till you get what you want.
WOnderful capture. You have captured the colours very well, and the exposure is right o the money, something that I have trouble with while attempting this type of photograph. It is nice that the town puts on this show. Thanks for sharing.