I completely agree with
@IneedaTCASAP's great response. Having gotten TC offers from a number of firms with low VS conversation rates, I observed that most of the very visible people, who would always make it a point to be seen and to try to impress those around them, tended not to get offers. However, many of the 'quieter' and slightly more relaxed people ended up getting offers.
Of course, this is not to say that you should not try to be as hard working, focused, and enthusiastic as possible in the circumstances. Those are positive aspects that will be counted in your favor. However, you need to read the rooms your are in. First of all, as a vacation schemer just because of your lack of experience you will necessarily be at the bottom of the competence hierarchy within the firm. While contributions and creative thinking are evidently valued, it is quite unlikely you will blow people away with your knowledge and skills. Thus, you should simply focus on doing a good job and scoring well in all the criteria you are expected to score well. Pay particular attention to the time you are supposed to complete an assignment by, at the structure and clarity of your drafting, and at spelling, grammar and punctuation. You would be surprised how many students who focus on making 'brilliant' substantive points overlook those.
Secondly, this applies in the social interaction context as well. It is essential that you form a good relationship with your supervisor and other team members. In most cases I have observed, the key to that is just to be flexible around the lawyers' attitude. If you see that they are particularly interested in discussing their work with you, be engaged and ask many questions about that. If they seem stressed and want to focus on their work, do not interrupt them many times to try to force a conversation. If you see they are more interested in spending the limited free time they have to just relax and discuss something unrelated to work, do not insist on such topics. If the dynamic allows you to ask them about their personal life and interests and thus develop a more informal relationship, you should definitely try to do that.