A portable C02 based cooler and beverage dispensing system for pressurizing and cooling beverage tanks, comprises a vibration-absorbing portable shell with a snap on removable tray for holding beverage containers and ice-cream-recesses, two growler-vibration-absorbing circular springs molded on the shell bottom for absorbing vibration from transportation and for holding and separating two beverage tanks, a tank-vibration-absorbing circular spring molded on the shell bottom for absorbing vibration from transportation and for holding a pressurized tank, a clamping system for clamping on and stabilizing two beverage growlers and a pressurized tank for transportation, two multi-height spigots, two height-adjustable telescopic posts, and a retractable height-adjustable spigot-locking handle attached the two posts and having two spigot-locking receptacles molded thereon for locking and adjusting the multi-height spigots to multiple different heights.

An ice bucket structure includes an ice bucket body and a bucket cover matching with each other. An ice storage cavity is provided in the ice bucket body, an inner container is provided in the ice bucket body, a load-bearing cavity is provided in the inner container, and a foot tube for insertion and fixation of a sunshade is vertically provided in the ice bucket body.