Park crowds in June

[ShelleyC]

We will be in Orlando June 10 - 20 as a family of 6. Wondering what type of crowds to expect in Universal during that time frame? We will be doing one day in IOA and one day in Universal Studios. We are staying off-site since there are 6 of us which would require 2 rooms on-site. We will not have the express passes. Which two of those days would be the best bet for Universal to have the least crowds? I've heard Sunday and Monday are typically the slowest days, but wondering if that is correct. Thanks!