I've gone to Americade twice since moving to the Boston area and the Laconia rally a few more times as it's only two hours away. You're right about Laconia, it's about 90% cruisers and of those 90% seem to be HD's. The market and booths are all t-shirts and leather and shiny bits of chrome. However, the demos are okay with Ducati, Yamaha and Guzzi usually showing up to break up the cruiser-centric event.
I enjoy Americade much more, the first time I went was about four years ago and it was still fairly cruiser dominated and A LOT of trikes. I went last year and there seemed to be a bit more diversity in the riders showing up. Definitely touring bikes dominate. Here is a view of the parking lot at the hotel I stayed at... by the way, it's called the Heritage and it's a long walk to all the festivities but a nice place to stay. I think it's around $110/night but I split that with my friend.
Last year there was an excellent showing of demo manufacturers. The only big brand no-shows were Harley, Ducati and Kawasaki. Kawasaki hasn't been there in recent years and apparently Harley management was upset that they couldn't get there preferred booth space... that was the rumor running around the rally anyway. Anyway, there is a ton of variety of bikes to try like BMW, Honda, Yamaha, KTM, Suzuki, Aprilia, Moto Guzzi.
Great riding roads in the area too but lots of traffic during the rally. Personally I wouldn't want to ride in any of the huge touring groups.
Right now I have a small group of friends that are planning on attending, nice guys, good riders and very mellow. You are welcome to join us if you wish.