So then, no King's Gambit until Charles or William take the throne (and no Queen's Gambit after)?
Grousing about Seasonal Variations

Only the chess-boxing variant should be permitted on December 26th.

A bit restrictive? How about allowing anyone who has seen a hippo in the wild? (Do you have wild hippies over there?)

Not even in your greater back yard (7,617,930 square km) ?

it mainly cover with kangaroos, crocs (both freash and salt water), water buffalos, dingoes,cane toads (nasty buggers), emus and of course the koalas.
edit: forgot to mention snakes, spiders

The anti-Cambridge Springs Variation?

If this is a sports question: chess is not a sport!

"Does PrawnEatsPrawn play the Poisoned Prawn? or only in months without the letter R ?"
Funny you should say that, given that it's June and that I finished this game a day or so ago:
It would help keep chess fresher if openings were restricted to certain seasons. e.g. only being allowed to use the Bird Opening from 12th August (unless it's a Sunday) until 10th December.