Segmentation and dynamic auto-reply emails

Hi everyone,

I'm trying to set up a rather complex event campaign (or maybe I'm over-complicating it)

• The event is held in 3 locations, A, B & C.
• A landing page with a Marketo form that lets them pick A, B or C.
• Their reply populates a marketo field which puts them in the corresponding Segment - at the same time, a confirmation email with dynamic content (based on their segmentation) is sent out - saying 'Thank you, we'll see you at location A (or B or C).

• Here's where the problem starts, it appears Marketo doesn't get data from the Segmentations fast enough - the thank you reply email is always the previous selection every time I fill in the form. Eg, I fill in the form with location A, I get the default segmentation. Then I fill in with location B, I get the thank you email for location A. Then I fill in with location C, I get the thank you email for location B.

My solution to this problem was adding a 2minute 'wait' step to my flow before the email send out. But I'd like to know if there are better ways to do this?

Thank you!