Yondu is aware that he's very close to joining his crew in the afterlife because the force of them eyebeam lasers would have also likely ripped his tether clean out his butthole, but come on, Bulma's drunk-ass enthusiasm is worth it. Look at how happy she is!

"From what I gathered Terrans really like weddin's. Makes their day."

Look how often people get married on the train! Obviously they love this shit.