What?
Anyone who finds park vibes "negative" is a pussy and is probably easily intimidated by others, and/or is constantly comparing themselves to others and coming up short in their own minds, therefore literally creating the negative vibes that they're bitching about.
I've been in parks all over the place and if you show respect, are friendly, responsible, safe, and courteous, the park is an unbelievably positive and upbeat place. If you're stoked on other people riding and progressing, it shows, and regardless of your skill or level, 99% of the other kids are gonna push and hype you up.
Clap poles, throw high fives, smile, whoop it up, daffy a 60ft'er, die on a ride on flat box, spray a bro, call drop, let the good times roll.
Only pre-pubescent children do the whole mean to strangers thing as a defense mechanism. Let your balls drop, let your dick swing, and give 'er. The proverbial 'er I mean, not your dick, that'd be weird.