My favorite map was definitely Garigliano Crossing. Beautiful, loads of great toys (BMW R71 especially), completely open so it's easy to flank and maneuver, all elements of attack included (land, sea, air) and with plenty of transport (incl. C47 for airdrop). It really felt like the golden days of FH1, which is a plus in my book as I had so much fun with FH1.
On Etna Line I mostly just fought as infantry in the town, as getting out in the open without a tank meant getting killed by mobile AA. Still very much enjoyable.
I can't really comment on Salerno and Biazza Ridge. First one I played once and Biazza Ridge I've yet to try out.
Least favorite at the moment is Operation Diadem, mostly 'cause I'm not a fan of night maps. Also, because to me it just felt like an endless grenade spam fest combined with falling off mountains every now and then.
Overall a very enjoyable event, thanks to F|H and WaW for making it happen. It was also great to see so many players online. At some point the 130 player server was close to full while 762 was almost full, plus a couple of guys on hslan.