If you book a full size, you'll be charged the midsize rate as an Exec. In HNL, there is no official Emerald Aisle or Executive Selection aisle. However, there is an Emerald Booth in the lot, which should be your method of pickup when you reserve a full size in HNL.

You'll be instructed at the booth to choose from a vehicle in the dozen or so stalls across from the booth (typically standard sized vehicles, with the occasional full size) or from the two Exec stalls to the left of the booth (usually a premium; I've also seen SUVs and convertibles, but not too often).