Today, RetailMeNot, a Ziff Davis company, announces the return of Summer Checklist, a savings event running from June 5-9. Shoppers can take advantage of exclusive deals and cash back on everything they need to gear up for summer - from travel essentials like hotels and flights to fashion, accessories, home entertainment and more. With top retailers like Expedia, Ray-Ban, Elf Cosmetics, Old Navy, Viator and others participating, Summer Checklist is the ideal time to save on all your summer pl...