I priced out your reservation using 02/09 noon - 02/17 noon.
Use Contract: 7014302 (Entertainment book contract number)
Use Rate Code: QVWHI (Hawaii promotional code for convertibles & SUVs)
Coupon Code: AD60212DL
Airport location: $204.63 total
Ala Moana location: $204.63 total
Doesn't appear that the airport code is adding any additional charges. Just a word of warning - we did this in 2005 (got our car from the Ala Moana National - which is the same office) and their selection was limited. In fact, most of those cars had scraps and dents, whereas the airport seemed to have the newer vehicles. Not sure if that matters to you or not.
Also, I noticed that convertibles are no longer coming up for that date. So, be sure not to cancel your existing reservation to use these codes. Instead - modify your existing reservation to ensure you don't lose the convertible availability.