Will I need to get a visa for my Vietnamese wife if we are married in Saipan and want to go to Guam for our honeymoon?

Yes, your Vietnamese wife will likely need a visa to enter Guam, as it is a U.S. territory. Even though Saipan and Guam are both part of the Commonwealth of the Northern Mariana Islands, they have different Immigration policies. It's best to check the specific visa requirements for Vietnamese nationals traveling to Guam to ensure you have the necessary documentation for your honeymoon.