Luke Goodere, 33, who was born in Boston and grew up in Skegness, had stopped off at Phi Phi island on the way back home to Sydney, Australia after his first visit to see family in the UK for two-and-a-half years.
A hearing in Lincoln was told he went to a festival with friends before going back to his hotel room.
Mr Goodere was seen by a friend to be fast asleep at 4 am but was found dead four hours later.
It is believed he may have got out of bed to use the toilet, tripped over his suitcase on the floor and fallen through glass doors to the balcony.
Thai police revealed that he suffered a fatal abdominal injury from a shard of broken glass.
Coroner’s officer Charlotte Alexander said in an investigation report read to the inquest in Lincoln: “It is believed that it was some time after 4 am and he’s fallen through the glass doors to the balcony.
“His suitcase was between the bed and the door so potentially he had tripped.”
A post mortem examination gave the cause of death as an abdominal haemorrhage as a result of abdominal injury.
Coroner Paul Smith concluded that Mr Goodere died as a consequence of an accident on April 11, 2019.
He said: “The best evidence is that he was socializing at a festival.
“He had consumed some alcohol and he and his friends returned to his accommodation.
“He may or may not have had too much alcohol in his system – I make no findings in relation to that.
“He was seen fast asleep at 4 am and the authorities were alerted four hours later at 8 am.
“During the course of the night, he got up from the bed and suffered an accidental fall and suffered an injury that led to his death.”
He added: “The information is somewhat sparse. The police investigation appears to have excluded the possibility of third party involvement.
“There’s no suggestion that any criminal act was suspected or investigated.”