Here’s the latest list of 10 travel deals for this week. Many of these links lead to offers with a very limited shelf life, so if you’re interested, act quickly. But don’t act so quickly that you miss the fine print. Summer Travel Deals aren’t quite so fleeting, and are also worth a look. Among this week’s deals: attraction-pass discounts in selected cities, a sale on Marriott resort rooms in Mexico and the Caribbean, and a free car-rental upgrade.