You won't need a special wax as such, but there are loads to choose from. If you get it detailed, the detailer should be able to recommend some products to keep the finish up.
I would get some wax to top it up (P21S is good, but not the longest wearing, Dodo Juice is great too), a quick detailer for between full waxes (Poorboys QD+ is very good, as is Meguiars Ultimate Quick Detailer). A stock pile of microfibre clothes (check eBay) a waffle weave towel (Megs or Poorboys) and the two bucket method with a wash mitt should see you right. Oh, and a decent wash (Chemical Guys Maxi Suds II or Citrus Wash n Gloss are both very good). HTH.
As for metal, I use Brasso!