I'm always conflicted about these because as a child of the 70s I would have cut my own arm off before being accompanied to an open day by either of my parents - you went on your own or with a mate, and were absolutely champing at the bit to be independent and out there on your own.
I am always sad that young people these days don't have that wonderful thrill of freedom, excitement and adventure about getting out into the world on their own, but are so anxious and cautious and reluctant to cast off into the big wide world.
I remember the adrenaline so well of jumping on trains, staying over night in B&Bs, going on road trips all alone to a couple of open days, and the different but equally exciting adventures of the couple of road trips I did with my friend to open days. They were the beginning of an exciting few years of wonderful freedom, not only uni but jumping on a plane to go and volunteer in India for 6 months a couple of weeks after my 18th birthday...
But I appreciate that times have changed and our poor kids have been conditioned to be frightened by the future and its association with debt and anxiety about making the wrong choices.
I will go with my kids if they want me to, and expect I will probably find it interesting and quite enjoyable, despite the fact I would much rather entirely for their sakes that they had the thrill of excitement I had about going it alone rather than needing me to help them by that age.