We visited 21 July 2014. The car park attendant was welcoming and wished us an enjoyable visit, kindly advising us to take care crossing the busy A6 to the entrance of the Hall.
Approaching the ticket booth, I saw a sign indicating that large bags couldn't be taken into the Hall so I queried whether my fairly large shoulder bag would be an issue. The friendly ticket seller said this mainly referred to haversacks, which must be left in safe keeping as some people forget they are carrying them and which consequently may knock over or damage artefacts (fair point).
It was a fine summers day and the short walk across the little bridge over the River Wye set the scene for our visit. Each wonderful, ancient room was full of atmosphere and would I think capture the imagination of anyone with a soul. We were not discouraged from taking photographs. Comprehensive laminated notes were to hand and House Guides were standing discreetly available should you wish to know more. Ancient pieces were carefully maintained and I noticed to my amusement that a beribboned teasel was placed strategically on the seat of any ancient chair, a subtle hint as much for our safety as for the seat! Some seating was available if needed.
The terraced gardens were beautiful and offered magnificent views across the Derbyshire countryside. There were plenty of seats, some covered, to sit and enjoy the views.
I'd recommend flat shoes, as the floors and some ancient well trodden steps are uneven in places. There are useful visitor notes on the Haddon Hall website.
We bought a guide book, which was beautifully produced, at £5 better value than many we've seen. We will certainly visit again.