Neil,
I have only fished the Royalty once recently, but it doesn't change a lot, and here are a few pointers which were forcibly refreshed in my mind last weekend
If you are fishing the Royalty, you need to be outside Davis's tackle shop well before the opening time of 7.30am at this time of year, especially if you have a particular swim in mind and want a decent crack of getting it (i.e, be at the front of the queue, if there is one...and there usually is)
The aim then is to get into the shop first and buy your ticket, then dash out and park the car in the car park at the end of the lane down the side of the shop, unload in record time and leg it for your chosen swim.
There does seem to be a slight problem going on, because you may still find the odd angler already present when you get onto the water, but there may be a legitimate reason for that (ask at Davis's beforehand, or someone else on here may know the answer to that)
Look on Davis's site for a map and up to date river reports, going swims etc....study the map and make sure you can identify the swim you want, so that you won't waste time faffing about on the day, and thus watch someone else get there in front of you
Cheers, Dave.