The Finest Education Vacation Offered In The Industry! This will be the 31st Pool Industry Expo. Having grown from a 1987 start of 30 exhibitors, P.I.E. has enjoyed enormous success and national recognition. THE P.I.E. format offers exhibit booths and educational seminars directed at decision makers of the pool and spa service industry. This year, P.I.E. returns to its exciting location in Monterey, California.