I would agree, belt inspection at service would be a good idea. I , personally, will stick to having the belt changed at the prescribed interval. Here's why. You could inspect every service and push the boundary beyond what is recommended, you may well get away with it and not have it fail and that would be great. But, you could inspect it as before and push on beyond the recommended time and it could fail leaving you with a big repair bill. there are no garages or technicians equipped with a crystal ball to see what is gonna happen. My view is, spread that cost over the change interval, what does it work out at per year? £150? £200 per year? What would a replacement engine cost? £3k? £4k? more? I view getting that belt changed, with genuine VW kit, by someone competent, as an insurance policy against that big engine bill!! Not a total guarantee...but...it's a start. How many people on here insure their home and contents? so, you decide not to do it and your house burns down due to the tumble dryer catching fire, or another electrical fault? would you still cancel that policy? You've spent a lot of money on this van, protect your investment by getting that belt changed. Say you come to sell the van? The prospective purchaser asks when the belt was last done? You say " ahh, well, i don't agree with VW and their service regimes so I've never had it changed, I just look at it every year, it'll be fine" As a purchaser, I've just knocked the cost of a belt change off your asking price straight off or I walk away.... I'm actually quite shocked that people are so beligerant against this, so you save a few quid in the short term.....Not for me! If it was a ferrari or a Lambo that needed a belt changed at an interval, would you still be jibbing at having it done? Imagine the potential damage in something like that?
So, I agree with the suggestion of perhaps paying to have the cover taken off once a year and the belt checked for contamination, wear, cracking, etc. That would be good practice in my book but, If you choose to go beyond the recommendations? and you get bitten on the Arse by it? To be honest? No sympathy whatsoever from me...