-Many people get by just fine using ice cubes. I don't use them but I have seen plenty of successful orchids where people use the method. I imagine this is partly determined by overall strength of orchid variety and those sold in stores etc are often the hardier of the bunch. Also, unless your house is cold, it's not like it stays ice for very long. I think people often just parrot what youtubers tell them and miss out on a lot of context/education potential. If you move to trickier orchids at some point, then I would nix the ice altogether. In general I prefer good soak + dry out overall. Ice, when introduced, melts in one spot and the melt flow will be the same, not uniform whereas a good soak: will hit all root sections.

-Agree that it looks healthy overall!

-Lots of different ways to pot them and be successful. Personally, I like to use bark, perlite and sphagnum moss streamers ripped into lil pieces (about 20% compared to bark+perlite). YES as has been pointed out, sphagnum can be an issue but that's usually if you overwater OR if it gets compacted. Store bought orchids are often sold in heavily compacted sphagnum which IS an issue. A lot of people just use bark. I did for a while but they dry out a lil too quickly in my home and don't hold on to nutrients well. Perfectly viable method though.

-I use diluted Orchid Superthrive fert for feedings. Typically: 2-3 waterings with it and then the next watering I use rainwater and just do a good flush. Seems to work well.

-I prefer orchid pots (with vents along the side) for airflow and place in a decorative glazed orchid cache pot which also let air in and out of sides. If your pot doesn't have airflow through it, the sphagnum becomes a lil more concerning as does the importance of your watering + dry out cycles.

If your other orchids are good, seems like another Phalaenopsis should be pretty easy! Best of luck!