gold is generally a 12ft wide van instead of a 10ft silver or bronze. Extra space is worth it.
"plus" differences should be:
newer vans and/or slightly better fittings
central heating/double glazing (not needed in summer)
early check in
you can phone the customer helpline and ask. We've had some lovely new vans which had two loos and were gold and some older vans that were supposed to be gold plus
Sometimes I think it is just down to luck and which van you get allocated.
We were away from the main complex and didn't hear any noise at night at all. Only looked a the pool once when in the complex later at night and it was empty, never went in it.
We didn't do much beach time when we were there as we only had 5 days (other than paddling at Scarborough and the donkeys which ds loved).
We went to Whitby, Filey, York, Flamingo Land (ds(9) really enjoyed this, but it was full of tiny little black beasties the day we went which was a bit yucky, we were constantly covered in them).
Had a pleasant couple of hours at a lavender garden place we spotted when out one day, very basic, just wandering about the gardens on a sunny day. there was a maze and in it were traditional games like giant chess, draughts and jenga etc. Weather was lovely and ds enjoyed it, very relaxing. It would be awful if the weather was poor though!