Business travel expenses are expected to keep rising due to higher costs. The average domestic trip will cost 6 percent more this year, or $1,110. The average international trip will rise 7 percent to $3,171, according to the American Express 2008 Business Travel Forecast. One way to watch your travel budget is to make the most of your hotel stay. Booking with the hotel directly lets you ask about package deals and other discounts they might have, or review value added services and features different brands offer. Ask about discounts for organizations you belong to, such as AARP, AAA, the