With none of the players spending a penny, goalkeeper Foster broke down his estimation for the cost of the trip, and how much it would have set back the club's generous owners.
'I went on the Vegas trip it was hard work mate honestly,' he told The Fellas Podcast. 'The way that Rob McElhenney and Ryan (Reynolds) put it on for us, laid it on for us, was just like nothing I've ever seen.
'We got there and it was just straight to the shower, straight get changed, go to Hakkasan for dinner and then we're going to Hakkasan nightclub straight afterwards. All expenses paid.
'Got to be £500,000, had to be at least half a million genuinely it had to be because they just looked after everything.'
The club's promotion party was well-documented, with scenes of their celebrations instantly grabbing the headlines.
Their four-day stay in Las Vegas included a number of pool parties, night club visits and even an ice sculpture of the club's badge at the Bellagio, as they unwound in all the luxury that the the Nevada oasis has to offer.
They also dined at Hakkasan as well as Wolfgang Puck's Spago, and partying at Hakkasan nightclub, OMNIA – where they were invited into DJ Steve Aoki's booth – and Marquee Dayclub.
But far from just footing the bill, McElhenney in fact joined his players for part of their celebrations, attending a pool party at TAO Beach Dayclub Las Vegas.
Cabanas and daybeds at the opulent Asian-inspired beach club can range from $1,500 to $6,000, and bottles of champagne range from $375 for Tattinger Brut to a staggering $1600 for a bottle of Jay-Z-owned Armand de Brignac 'Ace of Spades', perhaps explaining the eye-watering cost of the trip.
'We walk in and whatever's playing, the music shuts off and they start playing a Wrexham song,' Foster added, describing the team's first night at the Hakkasan night club.
'We've got a massive closed off VIP area, and there's Wrexham drapes falling from the ceiling, poppers going off everywhere with confetti, glitter. There's a screen and it's showing like Paul Mullin scoring goals and stuff like that!
'It's 1am and they've stopped the music and they're putting this stuff on, and every one of us is just going "What on earth's going on here?!"'
Former Manchester United and Watford goalkeeper Foster came out of retirement by signing a late deal until the end of the season and helped get Wrexham's promotion push over the line.
Foster became an immediate fan-favourite and could extend his stay at the club into next season.
Wrexham have announced that they will sit down for discussions with Foster to establish whether he intends to re-retire or keep his place as the club's goalkeeper.Read more 2023-06-02T01:02:52Z dg43tfdfdgfd