In reply to Dangerous Dave:
There are currently no public facilities of any sort on the kingshouse site. As mentioned above, with the exception of the walls of the original "King's House" itself, the whole building was demolished a few months ago. There is now a roof back on the old KH bit, but it does not look likely that anything will be open for some time. Therefore, whilst you may still be able to camp in the vicinity, though maybe not just on the other side of the bridge, probably not a great option. If you are keen to camp near a pub, paying for a site at the Red Squirrel may currently be the best bet (or the ski centre if it shuts late enough for you). Otherwise, BYOB and take your pick....