
Two hours, three bars, and a sixteen-person vehicle with your name in balloons on it.
A birthday on the bike fixes the thing every group birthday suffers from, which is that half the people never actually talk to each other. On here they have to.
Ten people pedal, five sit on the lounge bench and one runs the bar, and everyone rotates through. You cannot spend two hours in the corner with the two people you came with.

People bring banners, balloons, sashes and cake, and we have had sparklers on a cake in a parking lot more than once.
The bar top is flat and there are cup holders, so a cake travels better than you would think. Candles in Houston wind are your problem rather than ours, but people manage.
Put up whatever you want and take it with you at the end. It is a party vehicle, not a rental car. The full packing list is here if you want to check what else people usually bring.
Working out how much to bring for the cooler? The drink calculator does the math for you.
A birthday crowd is usually a mix of people who share one friend and nothing else. These three give them something to do besides stand in a circle.
Over 100 taps means everyone finds something. Covered indoor–outdoor space with swings and a terrace.
A free two-lane mini bowling alley with electronic scoreboards, under disco lighting.
Two levels of open-air patio and a rooftop with the skyline behind it.
The bike is $360 Monday through Thursday and $460 Friday through Sunday. Same bike, same two hours, same driver.
That is the entire difference, and it is worth $100 to almost nobody's actual birthday plans. If the date is flexible at all, move it midweek — the streets are quieter too.
And remember the price is for the bike, not per head. A group of nine pays exactly what a group of sixteen pays, so invite wide. Full pricing and policies.

$360 Monday to Thursday. $460 Friday to Sunday. Same bike either way.