EVEN by the usually excessive standards of the Keeping Posted diary, today threatens to be a day when, if we're not careful, we could easily be swept away in a river of champagne or even a flood of calories. The Peninsula and Omni the Hong Kong are celebrating in grand style. As is TV whizz Robert Chua's new China Entertainment Television and even Ted Turner's TNT channel. Then there's the AIDS ball at the Regent and four other cocktail parties. Turner, of course, won't be at his soiree being held in Planet Hollywood. But you'll find Hollywood glamour at the Peninsula bash. Husband and wife celebs Goldie Hawn and Kurt Russell will be there together with Stephanie Powers. Michael Douglas was also due to attend but a last-minute change in a film commitment forced him to send his regrets. But why is all this social activity planned for the same day? Chua and Turner obviously wanted their functions to coincide with MIP-Asia, a major event in the television industry currently in full swing in Hong Kong. The Pen had to ensure their party coincided with the diary of royal visitors the Duke and Duchess of Kent who will officiate at the opening of the hotel's new tower. And Omni the Hong Kong wanted its party to be dai pai dong -style along the Ocean Terminal quayside - and today was the only day ships were not docked there. Incidentally, Chua claims that his bash - to mark the soft launching of his satellite channel - will have a Chinese theme. Said he: 'Since we are a Chinese station I wanted everything to be based on Chinese traditions and culture.' Pity then that Chua is holding it at Westworld - a unmistakably Western (or spiritually polluted, as the Beijing cadres would put it) discotheque.