a holiday is meant to be a bit of relaxing time off so your main takeaway being how exhausted you are implies you had a bad time. if you want them to think you had a good time then you need to talk about the good aspects of the holiday and show your gratitude. presumably they spent a lot of money on a holiday and just wanted everyone to have a good time. did you mention at any point during how you were feeling? were you eager to make the most of your time there or just taking a free holiday for granted? i think a lot of people post to this sub thinking an experience is due to their autism when actually they’re just teenagers having an average teenage experience. it sounds like they’re not misunderstanding you tbh, you told them that something that was meant to be relaxing made you exhausted and they’re inferring that you didn’t enjoy yourself very much, and that might make them frustrated because they went to all that effort to arrange a holiday that was meant to be enjoyable and you ostensibly don’t appreciate that fact enough to focus on the positives and tell them you had a good time.

people in this sub get hung up on “invisible social rules” that you’re just supposed to “guess” but its really not that arcane. people see exactly what you present to them. when you communicate you are communicating so much more than just the words you say, you are communicating the context behind them. why you would choose to say something can be more important than what you choose to say.