You can kind of do this using a row level formula (can be created in lightning report from dropdown next to 'columns' text).
Year column can be created like so (formula output type = text):
TEXT(YEAR(--date field goes here --))
But you only get one row level formula for each report, so you wouldn't be able to do it for year, month and day.
If you are not familiar with this help article, I would start there: Contact Definition and Count Determination
Quick answer is yes these are counted as contact, but the contacts are dedupe by contactkey:
Contacts count only one time. Marketing Cloud automatically deduplicates multiple instances of a contact in a population based ...
If by storage you mean "GBs of data stored on SFMC", this should not give you problems, as I am yet to see an account being asked to reduce the data volumes stored. Especially not when they originate from records in Data Extensions.
If you mean Contact count, Orders and Order products will not add to this figure, as they (I assume) don't use Contact Key as ...
Salesforce Support are able to provision few custom Data Extracts having different functionalities, e.g. for deleting files. I seem to remember there is also an option of one specific type being able to move files across folders on Enhanced FTP.
There is no way you can create lightning record pages for reports in the Lightning app builder. reports are built-in report builder instead of lightning app builder. Reports represent a report, a set of data that meets certain criteria, displayed in an organized way. Access is read-only. This object is available in API version 20.0 and later.
I think there's no way yet... :'(
Because activities added to Salesforce with Einstein Activity Capture aren’t stored in Salesforce, they don’t show up in standard Salesforce reports. Use the Activities dashboard to see a summary of sales activities that were added to Salesforce manually and by Einstein Activity Capture. You can also use ...