Japanese used to send much more to the RIMPAC in the past. Now, that it really became u multinational exercise not in the name but in the reality in the last two ones number of Japanese ships got significantly smaller. Just compare those two to 10 ships and 8 aircraft just 20 years ago. Plus they usually stay few weeks longer after the RIMPAC to conduct their own drills with the US Navy.
A detail about Chinese warships way to Hawaii - Chinese, Brunei and Singapore Navy ships will get concentrated in the waters off Guam where the USS Shiloh will be waiting for them and they'll depart together for Hawaii. I heard something about an open day aboard Chinese ships but I'm not 100% certain about that info. Also 'Peace Ark' is going to participate in exchange and other activities together with USNS Mercy.
A detail about Chinese warships way to Hawaii - Chinese, Brunei and Singapore Navy ships will get concentrated in the waters off Guam where the USS Shiloh will be waiting for them and they'll depart together for Hawaii. I heard something about an open day aboard Chinese ships but I'm not 100% certain about that info. Also 'Peace Ark' is going to participate in exchange and other activities together with USNS Mercy.