it can be a great memory for him if his friends are comfortable around him but if they are not the most probably he will feel left out and in a trip always group is formed if he wants to be part of the group so he needs to.communicate he will gather up courage he will speak once twice thrice then he will be tired he will definitely feel like lest just don't talk and if someone speaks while he is speaking it will be more depressing for him if he had that one best friend then he should go otherwise probably he should not accepting that he can't go to a group trip will not harm him he can go to trip alone if he wants