The railing is loose, and now the family group text has three opinions about who should fix it. Before anyone picks up a drill, settle the question with one list instead of a debate.
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Check what is actually loose
Look at each post where it meets the deck or porch floor, and at each rail where it meets a post. A loose screw in the rail is a small job. A post that moves at its base is a different job, because the trouble sits in what the post is fastened to. Write down which of the two you found. If you cannot tell, get a second pair of eyes before anyone tightens anything.
Count the hours and the tools
Put the job on paper step by step, with the tool each step needs and the person who would do it. Include the trip to the hardware store and the time to return what you borrow. Note whether a second person is needed to hold the rail while it is set, because two people is a different job from one. If you do not own a ladder or a level, write that down as a cost to add later.
Set the hire side on the same sheet
Ask the carpenter whether the quote covers the anchor or only the visible hardware. Ask what they will check after the fix and who looks at the result. Get the scope in writing, including whether they will come back if the rail moves again within a set window, and ask how that window is defined.
Decide with a rule
Do it yourself when the job is a simple tightening, you have the tools, and you have an hour that you can actually give. Hire it out when the post moves, when the fix needs someone on a ladder, or when nobody in the family is willing to check the result afterward. Post the decision and the name of the person who will check it in the group text, so the next loose post has an owner.