It always gives out a good impression, and your willingness to be part of the play. Your absence will actually affect others’ work. Most directors like to have more than one complete real-time rehearsal, and if you are not present, the whole team will suffer. One can enhance his performance significantly by spending more time with the co-actors.
Reach on time
Reaching the theatre late is a very bad habit. Many talented actors fail to taste success just of their punctuality issues. Even if you are the most senior member of the team, making others wait for you is not a good idea at all. The theatre rehearsals might be very lengthy, but still everybody has to work around the time-table.
Focus on your own work
Pointing out flaws is entirely the director’s responsibility. Therefore, you must focus only on your job. Instead of spending too much time in criticising others, you should rather concentrate on your role.
However, if you have any sincere advice, you can go to your co-worker and tell him, but not in front of the whole team.
If you are not rehearsing, you must silently sit in the corner, and let others work. No good director tolerates any jokes during rehearsals. It is a good idea to make the atmosphere lively, but be very serious when working. Building a good relation with others is equally important.