Thanks very much guys, especially Mickthemillar, some great advice there.
I've already asked the ground where I'm shooting next weekend, and they said it was no problem so long as I had my own facilities
As to the gun, it would be with me at night, kept closer than the Mrs usually is
I knew that Mid Wales had no problem with campers, motorhomes, etc. staying on site.
HDAV, I'm trying my best but my chances of making the team are slim, due to me not shooting enough at proper grounds. My nearest ground is a 170 mile round trip (next weekend will be double that).