Hi,
I used to work there and if I recall they are not too hot on jumpseaters. The chief pilot only honors the agreements they already have (AA and Northwest and ATA I believe) the usual refrain is: get your jumpseat coordinator to get reciprocity.
however, hawaiian and aloha are very hospitable. and finally, mokulele is actually flying as go!express so I would imagine they can help.
good luck enjoy the islands