They usually have classical music as entertainment once or twice on a 7 day cruise but I avoid them since I find them rather mediocre and the performers usually have an attitude like they're the best in the world. This perspective is from a decent amateur musician though.

Shady lounge chairs in the pool area is usually pretty easy to get since they run along the full length of the pool deck on both the port and starboard sides. Not absolutely sure about the Navigator but I'm sure it's that way.

You know, I've never been in the pool but from my recollection, the whole pool is raised by a couple of steps so you can't just walk in - again I've not been on the Navigator.

Don't get me wrong there are desserts that are not sugar free but this last time they were pretty prominent.

Well that disaster of a an excursion on Corfu was a self drive (in a caravan) off road adventure. The course was way too long (almost 100 km) and people were driving like maniacs on the dirt trails. We gave our comments but didn't pursue any compensation since it was paid for with ship board credits. Two other times we've complained and gotten transfers comped or future shipboard credits.

Yes, the "free" excursions can be quite crowded but they usually limit groups to about 30 per guide/bus. The bigger problem seems to be guide quality since they now need more guides at each port than before when less people went on the excursions because they were charged.