Make up trial and Rehearsal dinner same day

Make up trial went fantastic. Rehearsal went well although I was very upset that everyone except my maid of honor was late. 2 people did not show up so I had to have stand ins. My brother who is an escort showed up 5 minutes before we were done and had the audacity to get a plate and eat after he missed the rehearsal part. MIL got on my nerves as usual giving directions and asking a million questions about the walk. She even stated she wanted to be in the recession when we walk out and I told her no that is for the bridal party only. We were showing the bridal party our choreographed routine and she jumped on the dance floor and started whining about no one told her and she wanted to be apart of it. I was so pissed.