Will my spouse need a command sponsorship for us to receive BAH if we get married during my assignment in Hawaii?

You shouldn't need command sponsorship for BAH, but you will probably need command sponsorship for medical treatment and for the Army to cover the cost of PCSing back to the states

Probably so man. For all of my soldiers who have got married here, they have had to complete packets for the following;
Command sponsorship
BAS/ Stop meal deductions
BAH
Also on top of that when your paperwork is complete double check your cola rate has updated for you and your new wife. Looks a lot of work but can be put together and submitted in a couple days. Get with your training room, they should have a list for what goes in each packet. You’ll have to enroll your wife in deers once married so she can get a physical through the army for the command sponsorship.
Good luck!

What has other married Soldiers in your unit to say about this? I know most other overseas places usually have a command sponsorship program but not 100% sure about Hawaii being it is the US. They would know more since they would have gone through the same thing bringing their family over if that exists in Hawaii. With you fiancé already in Hawaii and all your case will be different. https://installations.militaryonesource.mil/military-installation/schofield-barracks-fort-shafter/base-essentials/sponsorship