This is obviously how the bands manage to compete at so many venues.We experienced this "queue-jumping" technique at Mossely(I think it was),which if we had agreed to it would have put us back by two bands.(it wasn't Dyke btw-some-one equally famous).All bands whatever section they are in have the same right to play at as many venues as they can on the circuit if it is done fairly.
I say DISQUALIFY 'em and hold back their prize money(if any)!
If this was Top Mossley, and you're talking about Fodens, I think you'll find the problem was that a 1st section band (who I know and was chatting to) played before us, but had booked in by car 20-25 minutes before their coach got there. We had to wait for them even though their coach was behind ours. This was questioned and the steward said if there was a representative of the band there, they could sign in, coach or no coach.
Every Contest has it's own particular procedures apparently ;-)
Whilst not a member of Fodens, I played with them at Whit Friday (as last year), and we queued at several contests (for some time, eg at Broadoak, Droylsden), so much so that even though we played our first at 4.15pm ish, we had only done 4 or 5 by 7pm. We then played at 4 where there was no-one at all, let alone someone queuing.
Some bands (not just "name" bands) do more because they have a well planned, good route, a "waiting" strategy, the luck of the draw, AND are prepared to play at 4pm and finish after Midnight, after taking the afternoon off work to facilitate this!
It's not as bad as a lot of people make out, I've done it with all standards of bands and have never done less than 9-10 contests a year in 20 years. Some of those were finishing at 9.30pm for refreshments as well!