Final answer:
Frozen margaritas and swamp buckets are typically offered in standard and large sizes, with the latter often intended for multiple patrons.
Step-by-step explanation:
The question of what two sizes are offered for frozen margaritas, or swamp buckets, is subject specific to the establishment's menu offerings and would typically be answered based on their particular business practices. Nevertheless, a common practice for restaurants or bars serving frozen margaritas is to offer them in standard and large sizes. The standard size may often be a single-serving glass, while a large could be a pitcher or a bucket meant for multiple patrons. Swamp buckets specifically suggest a themed or branded large drink offering that may be distinctive to a particular venue or geographical location.