1 - the lockers are a bit of a mess. Best thing to do is send someone directly to the lockers and then have them meet up with the rest of the family in line. Most people allow the "butting" due to the locker situation. Make sure you remember the locker #. I didn't fully pay attention and I paid for it. There are a lot of combination of 8 5 3 - HA
2 - I don't THINK you have to check the bag if you plan to not do the ride at the last minute. However it is a FANTASTIC RIDE. It is quite possibly the best ride I have ever been on and I am a thrill junkie. NO it isn't fast or anything else - just an unbelievable ride. I would suggest you check the bags so you have the option to go on the ride.