I had been in Kuwait (Middle East) for nearly three decades. Most of the countries in the region do not allow Hepatitis B
positive individuals to have residence permits, even for dependants! / less likely for those with work permit / and as a server (hotel?) it is very very unlikely.
True, it is not contagious. It spread by blood or sexual contact.
I am sorry to say this - but I feel there is NO chance.
You have to check with the local health authority (Joint Secretary, Ministry of Health, Abu Dhabi) to be absolutely sure