Cardiff City boss Malky Mackay says his side is already preparing for life in the top flight after securing promotion this week.
Yesterday's draw against Burnley means the Bluebirds will also be heading to the Premier League as champions.
It's a huge challenge. We are going into the one of the best leagues in the world. We are going to plan properly - that has started already and we will now put that in action. We will make sure the structure we have put in place keeps striding forward and keeps adding because change is constant.
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Aaron Ramsey has told his English team-mates at Arsenal to beware Wales overtaking them in the FIFA rankings.
Plenty of fine dry weather to come today and prolonged spells of sunshine. A cool easterly breeze will take the edge off the temperatures.
The three-day event in the Welsh capital is expected to attract more than 20,000 visitors.