I actually did this for the first time and had a few people saying "hey let that new guy watch this". People surprisingly followed through and allowed me to finish up until the last boss. Which by the time I got out of the cut scenes the last boss was at 3% hp haha... I don't blame them because i can always run through it as many times as i want later. But I would rather not skip a cut scene because I really want to experience the story as much as I can.