NEC Birmingham advice staying with dogs

Hi looking for some info about the motorhome and caravan show and staying with our dogs.  We are heading off from the tunnel on Monday 20th for a 6 week trip to Spain & Portugal.  Thinking about a stop at the show on the Sunday 19th as never been to a show and its approx half way from home to the tunnel, so hoping to book in for one night and also have a quick look around the show.

We will have our two labs with us who are happy staying in motorhome for upto 3 hours unattended, once worn out from a good walk.  Can anyone advise if there is anywhere close to the temporary cc site for a decent dog walk say around an hour of them sniffing, running around?

Also at the showare we likely to be able to pick up European ehu adapters for Spain & Portugal?

Thanks in advance