lindal

I can't answer for Ovation, but I can answer for Anthem Sky Class, which I assume is the same.
Yes there is
We were offered a bridge tour. YMMV
The key is to prebook before the cruise via Cruise Planner site.

I'll add to @Matt information above. 
The Coastal Kitchen will be open for embarkation day, that's the first place we go to meet the staff.  And, if you have any reservations for specific times - you book those at that time, just to be safe.  
The sun deck should be good to go for suites - however, I'm not sure there is a dedicated bar up there - there was on the Oasis.  If not, you may want to make sure to bring any beverages / snacks with you.
You may have to keep checking the cruise planner to see when the signature activities are available.  If you have problems, you MIGHT get lucky if you make friends with the host in the coastal kitchen to help figure out how to get some reservations  ? 
 

Super pumped we sail May 2020 …..our 20th anniversary treat !!

I always welcome scans of the Cruise Compass so I can add it to the blog

I will always buy insurance based on our experience.  My family of 4 cruised the Eastern Caribbean in the summer of 2015 (kids were 13 and 8).  I purchased insurance because my husband and I have elderly parents and if something came up, we would have to cancel our trip.  Never in a million years would I think it would be my 8 year old son who would get sick.  We had a medical disembarktation in St. Maarten, my son was in the hospital for 2 days and we had to make new arrangements to fly back to the West Coast.  We had to pay everything up front (over $6,000 -- last minute plane tickets are insanely expensive!) but thanks to insurance, we were reimbursed for everything.  Our insurance was less than $200 through Travel Guard.  Like others mention, be sure you know what your insurance covers before purchasing.