Your new boyfriend has asked you to go on your first vacation together. You're as excited as Bridget Jones after Mark Darcy suggests a mini-break! But your celebratory dance soon gives way to some anxiety: Where should you go? What should you do? How in the hell will you share a bathroom for a week? Mason Miller of boutique travel agency Cate and Mason Travel Partners weighs in on how to avoid first-time vacation nightmares with your new man