I, personally, don't live in the US and am not a citizen there. Elections in my country are usually just elections to one single office (or assembly), not several at a time.
But yes, I generally walk into the voting booth knowing how I'm going to vote. If I had trouble remembering this, then yes, I would write it down and take those notes with me. If you think that Texas law you describe is especially bad, then I wonder how you think people voted before smartphones…