Even though part of me imapatiently wants my "Tempest HT", I totally understand and support the small shop business model that leads to shutdowns for vacation. I saw the madhouse at the HE2003 in June, and I can't imagine trying to prep, travel, set up, test, and then listen and patiently answer all those questions for multiple long days, break it down, and return home. Then do it all again. Besides that, working the design, being the boss, keeping all the contacts, and dealing with the sometimes-picky-to-the-point-of-anal-retentiveness audio crowd. And I'm sure I'm not listing all his hats.
I'm tired just typing it... All the best on a well-deserved vacation.