What you will get is comments about today's situation. The only thing certain about March 2023 is it is more likely to be different from today than the same. Better or worse, who knows.
UA's 773 seat for business is probably one of the best available today -- just a note about business seating, it is designed for the single traveler, not couples. That is true for UA and most other carriers. The middle two seats on odd rows for the UA 773, is favored by couple for that aircraft.
The food on UA is not best among carriers, plenty will comment on that.
The crews for most carriers are hit or miss. The Asian carriers tend to have more service orienated crews
A key point, is the aircraft shown today is subject to change, as is the scheduled times, in varying degrees depending on the carrier.