I'm surprised that Cruz got a speaking slot without a quid pro quo agreement to endorse the Trump ticket.
I sure as heck wouldn't have agreed to that.
Also, supposedly he will give a speech that has not been vetted and approved by the RNC or the Trump campaign.
Again, I wouldn't give him that latitude because I don't think he can be trusted.
Although I started out enthusiastically supporting Cruz, his conduct during the campaign convinced me that he was not trustworthy.
He has shown himself to be a spoiler and made it all about Cruz not about America. for that reason I wouldn't trust him on prime-time TV unless there was a prior agreement to endorse Trump and unless his speech was vetted and approved.