They don’t like it when you call the TOWER, unless you have been instructed to do so. That will earn you negative brownie points. First you will need a 107.
Do it properly. Go to DroneZone and apply for an authorization. Explain what you need, why and when you need it and fill in all the blanks. In the free form column give as much info as possible. Who is your VO, do they have a 107 and their pilot number. They want to know what mitigation you are doing for safety. RTH settings, etc. if something goes sideways.
I have had a great experience while doing this, sometimes getting approvals in a couple of days. But I have done this many times and they may know who I am. ?