Wow. I'm pretty shocked the actual wedding wasn't in the final episode!!! I thought this episode was going to be all set up but they fooled me! So I guess the finale will be the reception party, where Ted will see Mother playing in the band, then Ted leaving for the station and finally meeting her. I really hope we get a lot of Ted/Mother screen time.
So great to finally see Robin meet Mother as well, but it's a shame that it's only in the penultimate episode. I still want to see future scenes of Mother with the entire gang.