I become worried and upset when simple street signs come with asterisk and small text. To me it means something has gone wrong in the society.
Of course I understand that I won't get 2 beef steaks, 3 soups, 8 desserts and a lifelong supply of beer for that price.
Of course I can pop in and ask "Hey, what's exactly included in your special offer", if I'm interested.
Keep it simple. I don't want to start signing contracts each time I go to a restaurant.