Hey Stephen, Please see a detailed map and directions on where to park your van and how to walk back to the centre.
Below you'll notice the green dot which is the service area that you'll drop your stock off the red dot where you will park and the 
blue dot the entrance you will take to the venue. MORE PICS BELOW
BELOW
Take a right as you come out of the service area
BELOW
Note the bus station you will pass on your right
BELOW
As you come to the roundabout you want to go straight on a little as the street to your right is a no entry in to the train station car park.
BELOW
You will be parking your van in the TRAIN STATION CARPARK
BELOW
As you pass the roundabout this is the entrance you will take and then double back on yourself.
NOTE THE STATION MIGHT STILL HAVE THIS HOARDING ON IT
BELOW
Park your van in the STATION CAR PARK and walk the blue line.
This already feels like it's miles away but trust me it's really close :)
BELOW
Continue to walk the blue line up hill and turn left.
BELOW
See it's right there! you can see the TRAIN STATION CAR PARK at that TESCO lorry and the blue dot is the entrance to 
Thistles Stirling
BELOW
As you can see from this birds eye view the walk from the station is not that far and THE CRAFTERS ROADSHOW logo is where you will be set up just outside BOOTS and NEXT.