By Bathany Gavaghan & Lucy Marshall For food and drink lovers who love a bargain, spending 16 hours in ‘Spoons’ might sound like the perfect day out – or a worst nightmare for those who hate crowded spots. One woman spent all day in Cardiff’s most popular Wetherspoons spot, the Prince of Wales, in an attempt to learn what makes the UK’s most popular pub chain worth it. Wales Online news reporter Bethany Gavaghan spent breakfast, lunch, and dinner, as well as the late evening at the St Mary’s Street hotspot. While ‘Spoons prices’ is a phrase more Brits are familiar with – referring to the chain…