"These women were making snarky comments so I moved from my spot to catch a picture with these characters.
"Not for attention for me but attention to the fact NO WOMEN SHOULD BE SHAMED FOR FEEDING THEIR BABY UNCOVERED," Medina wrote in her Facebook post.
The mother, who posted in a public breastfeeding group, also explained that she and her husband are annual pass holders, and as such, visit the amusement park often.
Medina described herself as "pretty comfortable feeding anywhere, anyway", and recounted her amused reaction to the women's remarks.
"These ladies were so angry by it my husband just had to take a picture. Peep the haters," she wrote. "Characters of the day. Just had to get a picture!"
The mom is smiling widely in the photo, and remains amused by the women's reaction.
"I actually stepped a little over to get them in the picture because they were talking loudly saying how I should go to the restroom to feed," she told Popsugar. "I was happy my husband could capture me and my son happily feeding and I thought the looks on their faces were priceless. I mean, how could they be so mad?"
She also revealed that she used to cover up while breastfeeding her eldest son, but has now stopped doing so because she finds that it doesn't keep others from judging her.
"I covered with my first son, but honestly people will complain no matter what you do!" she said.