Will entering the US after being married 2 years make a big difference?

My wife seem to think that entering the US after being married for 2 years to be able to avoid having to remove conditions? How much of a headache will this cause us if she decides to come before the 2 year mark? Will she be able to work if she wants to? Will there be another interview etc?

I guess what I’m asking is, is it worth the wait?