Bad wi-fi may not be the provider's fault (my parents and in laws also have Spectrum and it works great). The problems are usually associated with router placement or the home/apartment have too many walls or structures/furniture in the way of the signal. Don't place the router under a desk or in a closet. If there are lots of walls or stuff in the way of the signal, make a mesh network (I have Netgear's Orbi bought from Costco, my daughter has eero bought from Best Buy, examples only, not endorsing them). The mesh network solved the poor wi-fi problem at my place. (May cost over $100 to set up the mesh network though, depending how many satellites you need, but worth it if you rely on the internet)
As for preparing for interviews, the keys are be yourself and know what you wrote in your essays. My school does both MMI and traditional interviews. When I do traditional interviews, I will have read the entire application, including all essays, activities, and LORs and ask questions based on them.
MMI's may be different at different institutions, so they are difficult to prepare for. Just be ready to address problems associated with conflict resolution, learning from mistakes, dealing with ethical dilemmas, etc. There are no right answers. We are looking at how you respond to these challenging situations.
Good luck!
