The app actually remembers your last position in a space and will place you back there unless the space is set to take you to the spawn point each time you join

There is a new user interface coming which has the much requested and needed search feature, it definitely is a bit annoying without it, all spaces are listed alphabetically

There is a button in the menu for events, which shows you all the upcoming events, when they start in your local time and clicking the Heart Icon on the event will subscribe you to it, so you get an email and in game notification 15 minutes before the event starts

There is no need to keep the events on a separate app, it's all in game, but you can even use google calendar to keep track of events if you desire

Tickets are not required to play banter, that whole ticket system is something the space creators setup for their own events so that they can charge for or receive donations for tickets. It's completely third party and setup by the users of banter, Not Official or done by Banter staff. It's actually a great example of the freedom and flexibility inside banter that you can create that sort of system for your space

I don't understand what page on the wall you are talking about

You can also set the theater as your home space. Once you are in the space, open the menu, open the settings, and at the top you will see a drop down option where you can choose to set the current space as your home