Here is the deal: We are flying into Terminal 1 on Southwest from PHX landing @ 6:45pm. Our flight out to SYD leaves on United (Terminal 7) at 10:10pm so we have LOTS of time. Here is my question - we want to get a decent meal at a favorite restaurant of ours that is located in Terminal 4. Oddly enough I have never flown into LAX or connected but it appears Terminal 4 has not post security connection to Terminal 7 (or to T1 if we wanted to pop over as soon as we landed on the SW flight before checking in for the United flight). Based on the fact that it sounds like we would need to go through security at Terminal 4, eat, THEN exit and go back through security at Terminal 7 for our later flight (and we were happy with all this wasting of time in security) will TSA even allow us to do this? At first I thought it was no problem but then I started thinking, if we are checked in for our United flight out of Terminal 7 are they going to let us into Terminal 4 or stop us at the security checkpoint? Basically are they checking that we actually are flying out of the Terminal we are asking to go into or are they just checking for a valid ticket (regardless of airline or which terminal we "should" be in)?