Preference would be given for chinese speaking people [101% No Problem].
I was in a hotel in Beijing and I noticed a European couple who were looking heartbroken; conversation established the reason.
They were Italian and they had been planning an extended tour of China for some two years. To this end they had taken an intensive Chinese course and had practiced it extensivley on the Chinese in their home city. Perfection is what they were trying for and perfection was what they thought they had got.
Until they arrived in Beijing.
Eventually somebody took them aside and told them that Manderin was the national Chinese language; not Cantonese as they had learned. That language was spoken only in the South of China and especially by Chinese emigres from Hong Kong and Macau.