Decked up, hard to miss

The Sony commercial for the tournament promised a red carpet welcome with a glitzy opening ceremony at the DY Patil stadium in Nerul. The 55,000-capacity stadium was all decked up but quite a few pockets of empty seats all around the ground were hard to miss.
The stadium was not even half full when the opening ceremony began, though the numbers did swell by the time the game began 15 minutes behind schedule.
And those trooping in late had no time to even settle before the Kolkata Knight Riders began from where they left off last year, when they lost two wickets without a run on board.
But Englishman Owais Shah (56 not out) and Lankan Angelo Mathews (65 not out) put on a rescue act which took last year's 'bottom of the table' team to a respectable 161 for four from their allotted 20 overs. And what was more incredible was when their bowlers then recovered from an early hammering to upset defending champions Deccan Chargers by 11 runs. Even as the stadium, roped in as a "home game" for the 'homeless' chargers, erupted, Sourav Ganguly's Knight Riders hugged with abandon in the middle.

Source : http://www.hindustantimes.com/cricket/Kolkata-Knight-Riders-beat-Deccan-Chargers-by-11-runs/518475/H1-Article1-518274.aspx

Could you please explain to me the emboldened parts?

Though I guess "decked up" means "filled up".