Flight
There are no direct flights from the continental US to Nagoya. Best option is to connect in Tokyo or Seoul. ANA and Japan Airlines are good airlines. Zip Air is the cheapest for flights to Tokyo. Major US airline carriers fly such as Delta and American Airlines. I typically take Delta flights.
Hotel
Any hotel by Kanayama station is convenient. There is shuttle service from Kanayama station to the wedding location.
Travel Note
Trains run from the airport straight to Kanayama station around 25 minutes. Will also have access to a car so we can pick anyone up who may have too much luggage.