When is the Ulthera treatment most effective?

I have an important event in a few months, so I'm thinking about getting Ultherapy before then. I'm curious if my facial contours start to look sharp immediately after the procedure, or if I have to wait quite a while. When I search online, I see conflicting reports; some people say they saw results right away, while others say it took two or three months. I know it varies from person to person, but at what point do people generally feel the highest level of satisfaction? I'm also curious if I can feel my face changing little by little while the effects are taking effect. How long should I expect the results to last after a single treatment? I hear some say they last about a year, while others say they return faster than expected. I'm also wondering if it's common to get the treatment again once the effects start to wear off. I'm worried that getting it too often might put a strain on my skin. For those of you who have had the procedure, please let me know when you actually felt the most results.