They're superstitious folk, theatre folk, therefore it's something of a surprise that Friday the 13th was chosen to ring up the curtain on Mamma Mia!
So much can go wrong with a show of this magnitude, let alone tempt fate selecting Black Friday to launch it, but a wee scenery whoopsie apart, providence smiled on the production that had the near-full house stamping, clapping and singing along to those oh so familiar ABBA numbers.
A couple who've seen the polished Broadway production swear the home town version's much more spontaneous.
Certainly, family and friends didn't hold back saluting their own when they made even the most cameo of appearances. This is as it should be when a relatively small musical theatre such as our own is bold enough to stage one of theatre-land's international biggies.
Mamma Mia! is billed as a romantic comedy, realistically it comes with undertones of Greek tragedy, its setting a taverna on a Greek island, where good-time '70s girl Donna Sheridan raises daughter Sophie, a child of uncertain paternal parentage.