This might seem obvious right now but once you are waist-deep in wedding planning it's easy to forget about the financial investment you are asking your guests to make to participate in your wedding. Whether it's travel costs to get to your venue or buying an expensive bridesmaid's dress, please keep in mind what you are asking other people to spend for your Big Day.
Not everyone is in the financial position to spend hundreds of dollars to be part of a wedding. These days a reasonably nice gift can easily be $100. That is a lot of money for many people. Add to that travel costs, possibly a hotel for the night, meals, and other incidentals and that's a fairly major commitment. Try your best to make it so everyone who wants to celebrate your wedding can easily make it possible. Yes, you are the star of the show but without all your loved ones there it just won't be the same.
Are there any ways you can save costs? Can you arrange cheap accommodation for your of town guests? Maybe they can stay at a friend's house? Can you compromise a little on your bridesmaid dresses so they are not too expensive? Is there anything that can be rented instead of purchased? Can you find a polite way to let your guests know that expensive gifts, or even any gift at all, is not necessary?
I'm not saying your wedding can't be magical and elaborate. I'm simply suggesting that you don't make it so expensive that some of your guests are unable to be there.