I prefer Newport YC 21/22 July for the following reasons:

1. I'm selfish - it's closer to home and I don't need to travel up the bay
2. I think it will draw more people from Buzzards Bay, Marblehead and LIS since the distance for delivery is less.
3. 27/28 July conflicts the Newport Jazz festival anchor and drinkathon off Fort Adams and the EGYC Regatta

On a side note - if this J/30 OD event draws more boats than just the standard NBYA participants, it could be thought of as a regional event replacing the now defunct Larchmont NOOD. Remember the Newport NOOD in 1997 that was also the NAs???
I believe the NOOD registration fees are anywhere from $200-$500 depending on the venue. I'd have no problem if the registration fee was $150 for the race related costs on a weekend event if we could get 10 plus boats on the line.

Like Vic - I can come up with some guest moorings and possibly a slip at the Navy Marina in Newport to help out of town folks. The guest mooring would be no charge. The slip would be at transient rates that I'd have to check on.