In chapter 7 Alice comes across a tea party being held by the Marsh Hare and the Hatter. She became interested and decided to join them. The very first thing she says to them is that it was rude to offer her wine when there wasn’t any.
Now if you look at the situation Alice is being very hypocritical because she came over to their table and just sat down without being invited or asking. The Hare points it out to her that she was being rude by sitting down without an invitation, and she immediately defends herself saying she wasn’t aware it was their table. Even though it should not matter at all.
As Alice goes through Wonderland she becomes less of the well-mannered, well-behaved girl she started off being. As she starts her adventure she is thinking everything instead of saying it out loud. At the tea party she first slips up and speaks her thought out loud.
From this point on, she says more of what she thinks without thinking it over. At first, it doesn’t really make a difference to her, but as she continues it starts to get her into more and more trouble. For example with the Queen of Hearts in the croquet game.