In reply to Somerville:
Lots of good information already here but I'll add my 2 cents.
Buy the new Rockfax guidebook and all we be answered
No in all seriousness there are lots of good multi-pitch sport routes that are well bolted. I'm not sure what sort of grade you're after but I'd have a look at:
Porte Neigra - Great little crag in the Rosengarten with some nice low grade multi pitch sport.
Piz Ciavazes - Loads of superb multi-pitch sport here
Sella Towers - Have a look at Delenda Carthago
Torre Brunico / Mur de Pisciadù - Amazing sport multi-pitch
Sass Ciampac - Have a look at 'Via Cinquantenario GAM'
Oscura della Luna - Lots of easier sport multi pitch routes
Tofana di Rozes south face - Superb multi pitch sport (albeit more runout than those mentioned above).
Sass de Stria - Ultima Tule et al.
I'll stop there, but there are loads more! All of the above are well bolted and you'll only need a minimal rack outside of quickdraws.
If you're doing trad your rack very much depends on the route. Though I typically tend to go light with a set of nuts and 4/5 medium cams and a load of slings. I've yet to place a peg in the Dolomites...
Get used to running the easier pitches out or you'll never make the longer climbs. The crux pitches tend to be well protected by numerous pegs of varying quality.
Enjoy you're trip!