Any tubbies travelling with you to Leicester? See if they can compete with Daniel Lambert, a celebrated Leicester lad who weighed in at 52 stone, making him 'the most corpulent man of whom authentic record exists' (Dictionary of National Biography). All this despite being around in 1770, long before the famous Golden Mile, a strip of superb curry houses, even existed.
Try some high-octane motorised activities in the day to burn of those curry-soaked calories with stock car racing, karting and quad biking all being available nearby.