Most airlines let you fly alone at about 13/14.
yes as long as they have a valid passport and their parents permission.
he doesn't have that much time to go for a holiday and he probably spends time with his parents
many because relatives or parents etc.. are there an you go to visit
Since you obviously will not be doing anything wrong, invite your parents to go along with you.
It is all upon your parents decision, but the average 9-year-old nowadays goes to bed in the summer around 8:00 p.m. to 8:30 p.m. Ask your parents
At 18 you are an adult and do not need parents permission for ANYTHING.
yes as long as you get your friend's parents permission.
round 14 i think
yes
they felt like going on a holiday
Of course
tell them that the teachers wont really be teachin anything