It's the first day of Summer! And to celebrate, we've rounded up some of the best coupons and deals from restaurants that want to help you get into the season. So get moving, as these are all available today only!

• Jamba Juice is offering a free upsize on any medium smoothie today. Order a medium smoothie and get upgraded to a large for free.
• Get 50% off a Frappuccino blended drink at Starbucks after 3pm today with free signup.
• Planet Smoothie has a free smoothie (!) at participating locations.
• Cool down with a free iced tea at McAlister's Deli.
• Or a free sample of frozen lemonade from Dunkin Donuts.
• Bring a friend for Juice It Up's buy one / get one smoothie special.
• Lastly, if you're in the mood for an adult beverage, why not take advantage of the final day of $2 Ritas at On The Border!

So get out, have fun, and Be Frugal this Summer.