Exactly! Why people are discussing lines is beyond me. Securing an iPad will be as simple at strolling into the store and asking an assistant for your relevant configuration. In and out 5 mins tops
It’ll honestly depend on wheneve you feel like getting there. Some people will say don’t go early at all, but if YOU feel like going early, and you can, simply do it. And wait it out. Certain stores might have a line compared to others, so do what’s best. 2 hours early won’t hurt.