Welcome to the forums! As Omar said, gates open about 2 hours before gametime. It's hard to say about the bleacher ticket, because it depends a lot on your comfort level in terms of having a guaranteed ticket before arriving as well as buying around Wrigley. There are several ticket brokers surrounding Wrigley that you can check out. If you go to Murphy's, you'll probably hear a few people offering to sell tickets. It's up to your risk tolerance level! If you decide to buy the day of the game, you're going to need to make a beeline to the park from your hotel, since you'll probably want to get in fairly early to get a good seat. There are no walking beer vendors in the bleachers. There are several beer stands in the area behind the bleachers as well as on the first floor level. Bathroom access was expanded and improved greatly when they upgraded the bleachers. Either way, though, expect to walk up and down stairs (to and from your seat, if nothing else) every time you want a beer or a bathroom break.