Visited mid-August, and they had only recently reopened for tours. Based on older reviews, you used to just be able to show up at certain times, now you have to write on for tickets. They have a couple of tour times during the day, and you list your preferred date/times. Only complaint is that it wasn't until almost the date that we were told we had tickets, so if you are in a limited schedule be aware that you might not be able to lock things in very far in advance.
Informative tour, interesting historical exhibits. You can see into the minting floor, so on our morning there were streams of pennies running along the conveyer belt.
Keep in mind this is a government building. So there is security, you can't have any bags, and no photos inside. Be sure to be early as they tell you, they won't let in people who are late.
As others have mentioned, you get an uncirculated penny, and penny blank. There's also a nice gift shop.
Plenty of parking in near by garages.