hopefully this helps - i bought the rear bumper protector film from VW at the weekend and this came with the same stuff, according to the instructions (ive fitted it now and it worked) the laminating fluid must be diluted with water, and sprayed on to the area before applying the laminate, also spray some onto the laminate (face going on to van)
1. clean area with soap and water and dry
2. use supplied wipe or something similar to alcohol to get the surface oil free (nothing industrial so it doesn't take off your paint!)
3. apply diluted laminate fluid to surface of van, and also to surface of laminate sheet
4. slide protector into place and squeeze out air bubbles with a credit card or something similar
5. wipe away run off with soapy rag (1.)
6. try and keep out of rain for 24hrs until the laminate fluid drys.
7. jobs a good en.
worked for me and the laminate has stuck like glue.
now protected from the wheels of the pram, shoes and bags.