The scorching summer heat may be forcing some holiday goers to rethink their vacation plans, but leisure businesses have shown no hesitation in raising ticket prices for those seeking assurance of quality time.About 80 percent of the 106 fireworks festivals surveyed in Japan offer paid seats this year, with the average "premium" ticket fee, which promises nice viewing and seating along with other luxury features, jumping 7.2 percent from a year earlier to 36,193 yen ($240) per seat, with some over 50,000 yen, according to research firm Teikoku Databank.That compares with the average 5,227 y…READ FULL ARTICLE