South-eastern parts of Australia can look forward to dry, clear and warm conditions over the upcoming long weekend, after many parts of the country were drenched by record rainfall in the final days of summer.The Grand Prix and Moomba parade are expected to draw more than a million people to Melbourne across the Labor Day weekend, while South Australians are tipped to turn out in droves on Monday's public holiday for the Adelaide Cup.Eight Hours Day, or Labor Day, will