Tell it how many people and how hard you are going. It tells you what to buy.
The tour is BYOB, so the cooler is entirely your call — which means it is also entirely your problem if you get it wrong. The rule of thumb is about three drinks per person for a two-hour ride. This does the arithmetic, including the ice, which is the thing groups forget.
Cans or plastic only — absolutely no glass. Bring a full-size cooler; there is room for it.
Drinks. Your headcount multiplied by the rate for how you are partying — 1.5 drinks each for Chill, 3 for Standard, 4.5 for Rowdy — rounded to the nearest whole drink. Standard is the honest default for two hours; Rowdy is a bachelorette party at 10:30 on a Saturday.
Ice. One 20 lb bag chills roughly 30 drinks, so the calculator divides your drink total by 30 and rounds up. It never returns zero, because turning up with no ice in Houston is its own kind of mistake.
What it does not know. Whether your group actually drinks what it says it will. Buy for the number you get, not the number you hope for, and remember the bar stops mean nobody is relying on the cooler alone.
Everyone on board has to be 21 or over, no exceptions, and drivers check. The rest of the rules are here.
About three drinks per person for a two-hour ride is the usual rule of thumb. For sixteen people that is roughly 48 drinks. Bring less if your group is pacing itself and more if you are not — the cooler space is the same either way.
One 20 lb bag of ice covers about 30 drinks. Two bags handles a full sixteen-person cooler comfortably. Ice is the single most forgotten item on a BYOB tour, and there is no freezer on the bike.
Anything in a can, a plastic bottle or a resealable container. Absolutely no glass — not bottles, not glasses, not tumblers. Every passenger must be 21 or older, and drivers check IDs.
$360 Monday through Thursday, $460 Friday through Sunday, for the whole bike.
Houston