Replying to Help me wit my tickets

Alright last night i was driving a couple kids home when a cop decides to pull me over. Everyone had about a beer in them but he did not breathilze us but he believed we were all under the influence. I got 3 tickets for no light for liscence plate, driving after 9 cuz im still 17 and driving with more than 2 passengers. I am just wondering if this will put points on my liscence, how much the tickets will be and if i should plead not guilty? Thanks for any help