Very nice, Christilou - love the way you've picked on the light colored straw hats with their black bands and the swooping tents tops. There is a really lovely quality of light in this first one, too. There's a nostalgic feeling to this image - I think we could easily be back in the 50's or 60's. I really like this photograph very much.
Your second, to me, has a humorous side to it - those three singers with their matching white pumps, seen from above make me smile.
Were these post processed for the b&w or was that an in camera preset? Inquiring minds feel they need to know.
Yes, your DNG file will remain intact and you will also have a "cooked" jpeg in whatever you have chosen Most people seem to be complaining about not being able to shoot DNG alone but I've found it quite useful myself as the camera can produce a much better B & W than I ever could and yet I still have a DNG file to experiment with. I'm still trying to find the settings in LR3 that work for me on the DNG colour files as sometimes the colour is too bright for me.
As I was walking home the other day I heard a band. Having my X1 in my purse (as I usually do) I nipped over to see if there was anything worth photographing. Whatever it was was just finishing and everyone was packing up but, I got out my camera and took a few shots anyway. The two guys (with their great big cameras) came over and told me how much they liked my camera and that it looked great and must take great pictures etc, etc. It made my day.