k1 visa: can I apply for EAD and AOS even not married yet?

[g&k 0]

can I apply for EAD and AOS as soon as I enter US even if not married yet?

[Frank+Jocelyn 1]

You will need to submit your marriage certificate with the AOS petition so no, you can't apply before you are married.

[SunDrop 59]

You can't apply for AOS, no. Without being married, you can't adjust your status because it hasn't changed.

You can technically apply for EAD. HOWEVER.... It costs $340 to apply for your EAD by itself. The theory is that it takes the same amount of time (60-90 days) to receive it and you cannot begin employment until you have it. Furthermore, it will restrict your employment to the expiry date of your I-94 (90 days from entering the country) so in practice, most people do not bother applying for an EAD as it will offer such a short period of employment. Once your EAD expires, you can reapply when you AOS but have to wait for the new EAD to arrive (another 60-90 days) before you can take up work again. The AOS EAD application is included in the AOS fee ($1010) so the general advice seems to be get legally married asap after entering on your K1 (quick I-Do in front of a judge), file your AOS and wait for the 1 year EAD to arrive 60-90 days after filing.

[Zen Den 18]

can I apply for EAD and AOS as soon as I enter US even if not married yet?

NO, remember that you are required to do one thing first before anything else as a K1 visa holder: get married w/in 90 days.