Can she come to the US without using a K-1 or K-3 Visa?
Click here for the official word from the USCIS.
Do I need to get a Travel Visa when I go to see her?
This will depend on which country you are visiting. Please click on here to check the Consular Information Sheet for her country.
What should the Visa Photos for the Fiancée/Spousal Visas and/or the Adjustment of Status look like?
Click here for government specifications.