I agree with the above posters. I did Ministry my first 3 times in Single Rider which skips almost everything. On my 4th ride, I did the full queue and there was very little else to see. The only really good room was the final room before the stairs with the house-elf animatronic.
When people talk about the impressive room, they're mainly talking about the main room - which you can visit even without going on the ride.