Originally Posted by vrichard

What I would do with respect to the Hawaii portion -
if you can't get United to change anything, I wouldn't change the interisland flights either; I'd check my bags all the way through to LIH (have UA interline the bags to GO), and take the chance that the UA flight arrives on time / early and/or Go runs late; and, if I missed the interisland flight, I wouldn't worry too much - I'd be surprised if I couldn't be accomodated on a later flight.
(If you change to later flight now, you still risk the chance that something delays your re-scheduled UA flight requiring further change...)