Celebrim
Legend
3) Even if you fail the save, you may will yourself to believe it's not real. This takes time and concentration (it is your action for the round), and it isn't always successful (it's a skill check). You pinch yourself, you bite your tongue, you shake your head and try to clear your thoughts -- it's explicitly an effort to get rid of the illusion, not a normal part of interacting with it.
I read this similarly, but don't believe that it requires a specific declared 'attempt to disbelieve' action. I read the spells as disbelief is now a consequence and not a prerequisite. As long as you spend an action interacting with the spell, you are entitled to an investigation check to observe that it isn't real.
This means that you don't get a free check just for having the illusion affect you. That thing can catch you on fire. If you want to not be on fire anymore, you have to spend some time getting rid of it.
Agreed, but trying to put yourself out in some fashion in my opinion counts as 'trying to get rid of it'. It's not free - you spent the action. The difference is that my interpretation would not require meta-knowledge by the player, "This is probably an illusion." Simply interacting IC even in the absence of meta-information would result eventually in the in game realization, "This is an illusion."