Nagoya - Osaka - Nagoya trip

We are a family of 10 persons who will arrive in Nagoya Chubu Airport on Sept 4, 8:30pm and will return home on Sept 7, 9:00pm, on the same airport. This will be our first time in Japan and we are planning to go to osaka on sept 5 and return to Nagoya on a
Sept 7. I need advice on the most cost efficient transportation we should use starting from the chubu airport to nagoya hotel, to osaka, then go back to chubu airport. I am considering the kintetsu pass wide however we could not buy it at Chubu airport since we will be arriving late and the agency selling the pass will be closed by then. Are there other discount tickets or any transportation option which is cheaper than kintetsu pass wide?

Here are your options for travel between Nagoya and Osaka:
http://www.japan-guide.com/e/e3302.html?aFROM=2155_2157

Indeed, the Kintetsu Rail Pass would be a very good value. Without the pass, travel by Kintetsu would still be one of the most cost-effective means of travel.