Ängelholm has been my home town for over 11 years now so it’s funny to hear people on STW talking about it.
Some good options listed, there’s a lot on offer in Southern Sweden in the summer so you really need to decide where you want to stop between drives and what you want to do. Camp site at Mölle offers a nice location for access to Kullaberg national park. Söderåsen nationial park is raw beauty for those who like to roam free.
Båstad is a nice location but it’s full of Stockholmers around the summer/tennis week so best avoided at all costs, unless you’re a tennis nut. Next to here is Hallandåsen ridge where there’s some great riding or hiking, there’s even a DH park there is you’re into that, more enduro than proper DH but still fun (I built some of the origional trails there).
The South East corner of Skåne is also beautiful, normally quiter and has some beautiful beaches like Ängelholm. I’ve camped at a nice place called Kivik, famed for its cider.
Up at Gothenberg you have the archipelago which are very popular and very beautify, and the city is quite nice as well.
Billund is a must for kids and parents alike, been every year for the last 5 lol, and La Landia water park, my recommendation would be 1 day at LaLandia and 1.5/2 at Lego land to really get the most from it.
//Jeff