It may come as no surprise to modern-day road warriors, but last-minute flight cancellations and delays are the biggest gripe of today's international business travelers, ranking just ahead of lack of communication by airline personnel in a recent survey of more than 1,000 globe trotters by Carlson Hotels Worldwide. The survey also found that hotel-bound business travelers remain frustrated by basic inconveniences, led by the condition of hotel rooms including beds that are uncomfortable and not receiving non-smoking rooms. International business travelers shared their views as part of a survey conducted by Synovate Travel Leisure research firm on behalf of Carlson Hotels Worldwide. When it comes to airlines, 75 percent of business travelers surveyed said last-minute flight cancellations were their most frustrating travel experience. Delays, lack of communication and sitting on the tarmac also ranked high. International business travelers are surprisingly more irritated by screaming children (61 percent) and incessant talkers (47 percent) than by confronting the hassles of airport security (32 percent).Seventy-two percent of cited that the basic condition of rooms frustrated them most followed by uncomfortable beds (64 percent) and rooms that were not ready following a late arrival (64 percent). Requesting a non-smoking room and not getting it and miscellaneous surcharges each frustrated 61 percent of survey respondents.More than half of the respondents (53 percent) said they are more frustrated by a non-working television in their hotel room than by waiting in line to check in and out (47 percent). More than 50 percent of respondents cited a hotel brand’s global presence as a contributing factor when selecting a hotel loyalty/frequent guest program.The best perk of business travel is visiting interesting places, at 70 percent, followed by change of pace (60 percent) and meeting new people (51 percent). Respondents also cited alone time (35 percent), "not having to make their bed" (27 percent) and "no family responsibility" (15 percent).The most popular hotel perk was a room upgrade (59 percent), followed by the availability of free Internet service (56 percent) and an exceptionally comfortable bed (50 percent). Also, 23 percent of survey respondents said redeeming frequent flyer miles is much more difficult than redeeming hotel loyalty/frequent guest points.Given five million frequent flyer miles or hotel loyalty points, the majority of survey respondents (73 percent) would travel around the world. Thirty-three percent said they would transfer their millions of miles to a family member, and 26 percent would reserve a plane for a roundtrip flight with friends and relatives.