You might want to consider watching some movies and videos that can inspire you about how you want to look and what you want to do in the reception. Here are some great movies that you might want to consider watching together.
Bridesmaids, released in 2011 is one of a kind fresh and vibrant movie that can teach you that things usually go over board when you are planning for the wedding if you are not cautious. It does not mean that you have to keep cutting costs everywhere, but even though you are the one getting married and want it to be grand wedding of a lifetime affair, you are also the one who needs to take care of everyone's emotions around you.
Consider watching The Royal Wedding video of Prince William and Catherine of Scotland. They are the Royal iconic couple of the era and simply followed by most couples who are now getting married. The poise and the grace with which each of them conducted themselves is simply worthy of a watch over and over again. Maybe you can also pick up some inspirations from the royalty here.
The Wedding Planner and Love Wedding Marriage are a good watch too. While Jennifer Lopez keeps you completely entertained in her lady like ways in her movie, Mandy Moore is no less in bringing to you the twists and turns that most couples usually see in their relationships at some point of time or the other.
My personal suggestion is to take the movies lightly and entertain yourself from time to time and keep both your spirits high. It is a big decision that you have both taken and a big step that you are about to take. Spend time together and share your feelings and your fear if you have any, never keep them bottled up within you.