Wireless ad-hoc network technology is an important technology for achieving pervasive computing. Very few studies up until now have focused on applying and evaluating ad-hoc network technology for an actual system. Therefore, we constructed a tourist information delivery system in an actual tourist area by using this ad-hoc network technology and conducted a field trial. Our system can automatically deliver tourist guide information when someone who has a PDA approaches a specific location. We measured ad-hoc network performance in the real field environment. We also handed out a simple questionnaire, and about 90% of the respondents had a positive impression of our tourist information delivery system. However, many respondents were concerned about the network quality and security. To put the ad-hoc network technology to practical use, we need to further study from the viewpoint of users? needs as well as technical aspects.