Returning to Vinyl

Now planning a return to vinyl listening after a nearly 40-year hiatus and need some basic help. Although I do still own a functional mid-fi system (Goldring GR1.2 TT with preinstalled arm, Goldring Elektra MM cart, Cambridge Duo phono pre), long gone are the battery-powered vibrating stylus cleaning brush, the Nitty Gritty record cleaning machine, the LAST LP treatment solution with the big wide application brush, and even the MHS archive-quality replacement sleeves. I know there are several cleaning machines on the market and am willing to spend something reasonable (<$1k), but beyond that I'm clueless.
Q1. How necessary is a cleaning machine for an occasional (say, 3x/mo.) vinyl listener with irreplaceable LPs?
Q2. If needed, which product delivers most bang for the buck? 
Q3. Same questions re stylus cleaning devices.
Q4. Same questions re record preservation treatments.
Q5. Tracking/alignment/pressure have not been checked or adjusted since acquisition despite two moves. Are there still shops performing these services? 

Advance thanks for all useful advice.