In reply to JayW:
As the others have said there are a number of options.
The whole purpose of 'recording' the activity is for use later in DLOG or to keep track of where you have been etc, or micro analysis of your route. Some people are in to that, others are not! So which ever suits you. Depending on how you want the data to be searchable depends on what you select.
For example, when I go hill/mountain walking, I select Hike. If I am going for a flat walk around the roads and paths in my local area, its walk. This makes stuff searchable at a later date, so if anyone asks me for a good walk in X area then I can go back through and narrow down the search field. But lets be honest it doesn't make any difference really. Its just preference. It also links into Garmin challenges and badges etc. But that's if you're interested.
As for the data fields, everything is fully customisable on the Fenix 6 pro, you can display absolutely anything you want from current local time, to grid ref (OS) or Lat Long position, current height, pace, average pace, direction to way point, navigation prompts. This is selected by picking your activity, IE hike, press and hold the middle left button then go into Hike Settings>Data Screens and off you go from there.
Whilst I appreciate this may not be to everyones personal taste, and there is absolutely nothing wrong for just going for a walk and leaving it behind. Its a tool, a very powerful one which can be used. Just adapt it as you see fit, and if you're only looking at the time and ABC, then its probably a bit much for what you require! But they are phenomenally good, and only getting more powerful.