We had a van for a few years but I did tent (with actual camping BED) while spouse did van due to his massive snoring and my general sleep akwardness! Advantage of working is crew camping which most years was pretty central to the stages and we also had hot showers and decent loos!
There is a vague possibility we'll get our work gig back next year - working (no pay, free entry and crew camping and food plus coffee on tap - yea) is really the only way I'd do Glasto again.