We are coming to Osaka by cruise ship and will be there from 8AM to 5PM - one day only. We have been to Kyoto and Nara; can you suggest what we should not miss in Osaka when we visit; and how to get around to your suggestions
A lot depends on your interests of course. But I can give you a few suggestions.
But you can try these:
Osaka Castle - over 400 years old
Dotonbori - Famous for nightlife (but worth walking through even in the day)
Nipponbashi Denden Town - Osaka's version of Akihabara's discount electronic shopping area
Amerika-mura & Europe-dori
Shitennoji Temple - one of Japan's oldest
Sumiyoshi Taisha Shrine
Umeda - big station & shopping
Shin Umeda City - floating garden observatory
Ohatsu Tenjin Shrine
Tempozan Harbor Village
For more info and detail, you could also look at:
I hope you have a great time!