Input?? TWW

Heyyyy- Tomorrow I am going to the water park with my brother, (who has been away at Germany for over 3 years) and my dad. I'm nervous because I have some oldish self harm scars on my thighs. There's no covering them up without it just looking stupid. I am going to put band aids on the ones that are more visible. I'm not ashamed of them or anything.. I just don't really know how they are going to react, if they are going to react, what they are going to say. I don't want them to feel all bad about it either.. Honestly I don't even think they have any clue that I have even done any form of SH which is why I am so nervous about their reactions. Me and my dad also don't have the most "affectionate" dynamic but I know he cares. My brother on the other hand I feel like will just make fun of me for ever having done that or he might shit on me for it. A mix of both which I am prepared for because he's just that type of person. Does anyone else have a similar experience with family, with the same dynamics maybe? What should I even say that won't cause concern. Of course I wish they wouldn't mention it at all but if it's enough to get stares at from random people (I know this from going to a water park earlier this month) then I know for sure that they will notice. Thank you :,)))))