Gill,
Rookley Park is becoming a huge site, they are expanding every facility right now, and it looks like it will be very good when they have finished.
There is a large static van site as you enter the park, then the hardstandings for touring vans,of which they can take a limited number at the present time, and then camping areas, but when I called in there last week they had a lot of earthworks going on, with new areas being created.
The Portsmouth /Fishbourne route does have special offers on, and free van passage, usually very late night/early morning, ie 12 midnight to 3am, or thereabouts, just check nearer the time.
As for fishing, they do have a trout lake, and ther are several other freshwater fishing venues around the Island, have to get a permit though!!
Also, of course, there is the whole of the coast to go sea fishing if your husband wants to do that, or even go out shark fishing!!
All the good sites are very busy in school holiday times, and the facilities suffer as a result, as would be expected.
Rookley is a village between Newport and Godshill, and the site is on the main road just as you leave the village, there is a shop in the village, but nearest big supermarket will be Newport, with the choice of Sainsburys, Morrisons, Somerfield, with M&S as well.
Toady Diesel is selling at 99.9 per litre at the S'Markets, but is at 101.9 at some independent retailers.
Because of the state of the roads, and the almost blanket 40 mph speed limits, plus the usual 30's and some 20's, dont expect to get great fuel economy.
The roads which are subject to the national speed limit of 60 are such that it is almost impossible, unless suicidal tendancies run in the family, to achieve this.
The one stretch of Dual Carriageway,all of 3/4 of a mile long has , in one direction a 40 mph limit about 300 yds from the end, and the other direction a 40 followed by a 30 starting about 2/3rds of the way down its length , but in the remaining bit, if you can , you are allowed to do 70,in practice though, its not possible due to the queues.