Question about contract

I am about to sign a contract with a videographer. Not sure what should be included... Is it a routine for videographer to keep the copyright? How much time in advance should I expect them to come? Anything else I should pay extra attention to put in written?

Thanks!

Best

These are all the q's I asked:

1) How many years of experience do you have as a videographer?
2) Approximately how many wedding videos have you videotaped?
3) What is your style of video production? Documentary or cinematic?
4) What type of packages do you offer?
5) How much will it cost for the package I am interested in?
6) Can you add in a photo montage, if so, what is the cost?
7) Does the package include titles for the video, if not, can it be added, and at what cost?
8) How many hours does this package include?
9) How is overtime calculated?
10) How much are additional copies?
11) Do you edit the video after the event?
12) Who keeps the raw footage? Cost to keep?
13) How long after the wedding does it take to receive the final product?
14) Are you the person who will be videotaping my wedding?
15) Will you have an assistant or other videographer with you on the day of my wedding?
16) Are you familiar with our ceremony and reception location?
17) (If No to above) Do you visit the ceremony and reception sites before the actual wedding date?
18) What type of equipment do you use?
19) Do you bring back up equipment with you to the wedding?
20) What format do you use?
21) Do you have a wireless microphone?
22) What is your payment policy?
23) What is your cancellation policy
24) Do you offer a money back guarantee?
25) Do you have liability insurance?
26) How much does it cost for over time?
27) Who choses the music for the video?