Burger King restaurants may offer a free Whopper or Chicken Sandwich to customers in exchange for taking a customer experience survey. If the survey is available in your country (USA & Canada) you will see the invitation on the receipt with Survey code and Survey URL
https://mybkexperiences.onl
https://gov.trava.finance/user/mybkexperiences
https://lab.daintl.org/members/mybkexperiencesonl/
https://my.usaflag.org/members/mybkexperiencesonl/profile/
https://www.passes.com/mybkexperiencesonl
https://developer.optimove.com/discuss/6953534252ef1496aba03204
https://my.usaflag.org/members/mybkexperiencesonl/profile/
https://participedia.net/user/434147
https://education.cwf-fcf.org/IUCNyouth/profile/mybkexperience/
https://www.careeredlounge.com/pg/profile/burgerking
https://www.symbaloo.com/profile/burgerking
https://blogger-mania.mn.co/members/37593392
https://hahow.in/@burgerkingsurvey
https://www.scener.com/@burgerking_survey
https://hype.co/@burgerking-survey
https://vote.easypolls.net/695cd53c1033570060bab672
https://escrever.coletivos.org/s/HysuHUcEbe
https://www.ameba.jp/profile/general/milestrenwyth/
https://arzookanak110007.mn.co/members/37594033
https://utas.me/bugerkingpoll
https://web.ggather.com/BKstore-experience
https://hackmd.diverse-team.fr/s/HJG1A85Ebx
https://www.screenskills.com/community/2044f4d9-dd98-4ea8-985b-97d51c164da4/
https://api.apptracker.dev/discuss/6810cd01294a79002d89f91e
https://king-wifi.win/wiki/User_talk:MilesTrenwyth
https://ns2.asso-web.com/BK-stores-survey
https://neighbourhoodplanning.org/network/forum/users/milestrenwyth/
https://gitlab.surrey.ac.uk/MilesTrenwyth
https://code.antopie.org/MilesTrenwyth
https://billionphotos.com/users/Mybkexperiences-onl
https://raffall.com/Burger_King_poll
https://tiltify.com/@burgerking-survey/profile
https://onescreener.com/mybkexperiencesonl?
https://writexo.com/share/1cbd3e90d8b9
https://notes.netd.cs.tu-dresden.de/s/PvQAvbY0h
https://api.optune.me/v4/artist/mybkexperiencesonl.html
https://www.moshpyt.com/user/BKCustomersurvey
http://jobboard.piasd.org/author/bk-stores-survey/
https://huzzaz.com/collection/mybkexperiences-onl
https://ieee-dataport.org/authors/mybkexperience-survey
https://projectnoah.org/users/burgerking-survey