The Full Goblet is a modest-sized, working-class tavern (public house), run by Hilgar. Hilgar is a bit over the hill and shabby, as is the general establishment. However, good solid fare at a decent value, and a regular and noisy clientele, keep the place in business, and the bar is also well-situated to bring in travellers.
Tarot Cards are used by Magic folks to predict the future (cartomancy). Since the present becomes the future through the interplay of elementally alligned forces, the tumble of cards can give clues to the way the pattern of elements will be in the future.
This means a wizard will have a deck of cards with them. Since cards were used to train wizards in legerdemain, Since they have cards with them, they frequently know how to use them. Guild magic users often have a knack for fancy shuffles, palming cards, and a variety of card tricks and games.