Hi Regina, and thanks for the complement! I know you're probably really anxious to get all the plans for your upcoming vacation squared away. Unfortunately, the June schedule has not been released -- keep checking back.
June's calendar should be posted soon.
As for Fantasmic, I made some phone calls to try and get the answers you were looking for. I can tell you that currently, Fantasmic is showing on Monday and Friday evenings; however, the cast member I spoke with thinks that more shows will be added during the summer months. It could possibly return to a nightly event.
In summary, I would assume that Fantasmic will at least show on Monday, June 1 and Friday, June 6. Dates and times are always subject to change, so check back frequently.
Hope this helps, and have a great vacation!