I. No licensee shall substitute any other brand of beer, ale, liquor or wine in place of the brand specified by a patron unless the licensee has advised the patron that his desired brand is not available and has received his approval of a substitution.
II. No licensee shall refill any bottle of legally purchased beverage or liquor.
III. Where a licensee is authorized the retail sale of beer in a refillable container, such licensee, at his sole discretion, may fill such refillable container with his product regardless of the branding on the refillable container.