Greetings Bulgarians are polite and a little reserved on first meetings, so a handshake is most appropriate.
Personal space Bulgarian attitudes to personal space are more relaxed than some other cultures. People may approach closely when speaking to you, or join your table at crowded restaurants.
Queues The Bulgarian attitude toward queuing can be somewhat fluid; idle or distracted travellers can expect queue-jumpers to pounce.
Gifts Flowers and bottles of spirits are well received by Bulgarian hosts, if you're lucky enough to be invited to dinner.
Tipping Rounding up a bill, or leaving 10% of the total, is standard tipping practice.
Public transport In Bulgaria it is considered very poor form not to relinquish your seat for a pregnant or elderly person.