Except as otherwise provided in this chapter:
(a) Beer or intoxicating liquor may be served to a person not seated at a table unless there is reason to believe that such beer or intoxicating liquor will be consumed by a person under twenty-one years of age.
(b) Beer or intoxicating liquor may be served by a hotel in the room of a bona fide guest.
(c) Neither the seller nor the Liquor Control Commission by its regulations shall require the purchase of food with the purchase of beer or intoxicating liquor; nor shall the seller of beer or intoxicating liquor give away food of any kind in connection with the sale of beer or intoxicating liquor, except as authorized by regulation of the Liquor Control Commission.
(d) The seller shall not permit the purchaser to remove beer or intoxicating liquor so sold from the premises.