Quinceanera Beach
Party Theme
Here is another great Quinceañera party idea that breaks from tradition. The Beach Themed Quince is clearly dependent on the season. Girls with summer birthdays would definitely want to consider this theme. The motif, music, and attire is casual and the focus is on fun instead of pomp. Even with the beach theme, the sanctity of the occasion can be preserved by carefully segmenting the phases of the party between casual and formal.  Here are some ideas to get you thinking in the right direction.
 
Invitations
î To set the tone for your beach party, find invitations that are colorful and theme based. Ensure that the dress requirements are stated in the invitation. Here are some great ideas for your beach-themed invitation.
 
The Menu
î Grilled foods are the perfect accompaniment to your beach-themed Quince. From grilled salmon, to burgers and steaks, you can't go wrong. A cold appetizer such as a shrimp platter on a self-serve bar will set the stage. There are plenty of resources for planning and setting up a beach buffet.  For your dessert, consider an ice cream cake - just keep it cold before presentation. A  refreshing summer punch is an absolute necessity for any beach party; and, it can be simply made. 
Party Favors
Some ideas for party favors include
beach-themed Candle holders, etched party tumblers, surfboard key rings - the possibilities are endless.

 
Decorations
î For decorations, try placing sea shells on every table and candles in the evening for a special touch. Also, natural flowers would add a splash of color. Colorful boogie boards can be used as props around the reception area. Think of Southern California and the white beaches of Florida and Texas for inspiration!  It is critical to set the Beach theme with lighting and ambiance. Tiki torches are a nice touch.
The Music
The possibilities are endless for music. Beach music abounds - The Beach Boys, The Surfers, Jan & Dean, just to name a few. Even High School Musical tunes, very popular today, would be suitable. 
Quinceanera Beach Party Attire  
For the Quince girl, the dress should be simple but classy. Try a simple A-line gown. For your guests, suggest they wear casual beach clothing to your reception such as board shorts, Hawaiian shirts, swim suits, and sandals.