As far as the bees, wait until dusk, they are not as "alert", gently tap a few times on the dish, if nothing happens, then give it a shake, if nothing happens, then your good to go.
If you run when they come out, you will be fine, I've ran away many times from wasps (I'm highly allergic) and I have never got stung, or one even close to me.
Give it an hour, for them to get sleepy again, and spray the inside of the feedhorn with black flag.
UNPLUG the 4DTV to power it down, and unhook the lnb cable, if you still have buzzing, it might be a nest of bees! :O