Lve this idea! Except maybe instead of lanterns you could use various clear vases that are different heights filled with candles or water and flowers and do a different set up at the end of the aisle (curtains with flowers pulling them back maybe)? Love this though with the lake in the backdrop and the time of day! The seating is just perfect!
If you want to do this look, Hobby Lobby has 2? 3? lb. bags of these river pebbles for $2.99 regular price. They have this kind of starfish for $3.99 each, reg. They DO have sand, but I'm not feeling the love. Didn't price the candles.