So far, the Fuji F10 and F11 are the only compact cameras capable of low noise at ISO 800 and 1600 and is the most suitable for such dim light situations.
However, distance is usually a problem unless the person is so rich to buy seats in the first few rows. .... which have prices like $268, $298, $368 etc .... or he doesn't need any any close up shots.
Otherwise, DSLR is the only way. Prosumers cameras have too much noise at ISO 400/800 even though they have the long zoom. Moreover, if distance is far, the prosumer cameras won't be able to have fast enough shutter speed to freeze movement and yet have proper exposure in such dim lights even at ISO 400 or 800.