Absolutely not! The registry here is just a suggestion of things the couple will like, but they will love whatever you want to give them!
You read it correct, the couple will be saying "I do" on Thursday evening, the couple knows that it may be difficult getting to the wedding and hope you can make it, but understand if it's not a possibility.
Yes, the rehearsal dinner is being hosted by the grooms parents Kathy and Pete Lassen and they have invited any guest who will be traveling to join!