Oh, what to wear? - Rehearsal Dinner

I have a wedding coming up in June and I'm thinking of using Rent the Runway for the first time.  My boyfriend is in the wedding and I will be a guest.  I like getting a little dolled up since I work from home now my wardrobe is a little boring. 

Here are my choices so far for the rehearsal dinner.  Feedback on RTR and the dresses are both VERY welcome!

Milly - Paris Love

Milly - Eva Sheath

Rebecca Taylor - Mint Julip

Rebecca Taylor - Ruffle Waterfall

Tibi - Summer Daised