Is it ok if I post some pictures of my best friend and little brother Cosplaying as Big Hero 6 characters standing siguiente to a Baymax and Gogo Cosplayers from the Con Nichiwa Con Convention center?

That's a picture of my best friend Jimmy Woodward Cosplaying as Hiro Hamada while standing siguiente to a Gogo and Baymax Cosplayers. Is it ok for me to post the Big Hero 6 Cosplay pictures to this fan Club group? I got pictures of my beat friend Jimmy and my little brother Nathaniel standing siguiente to some Big Hero 6 Cosplayers at the Con Nichiwa Con Convention Center back in March 2015. I just gotta get the Cosplay pictures off my PS vita. I did not take the pictures with my Windows phone at the time cause I was at the Frys Grocery store with my mom and little brother and I went to the bathroom and I accidentally dropped my cell phone in the Toilet 🚽. So yah it's going to be a while before I can get the Big Hero 6 Vosplay pictures off my PS vita that me,my little brothers and best friends Jimmy Woodward and Eric Hall helped me take while at Con Nichiwa Con Convention Center . Thank tu for letting me know if I can o cannot post the Cosplay pictures here in advance:-)