I happen to have a bit of experience fishing in NW Ontario. I've learned some things over the many years that may be helpful to you. First, anglers that fish on Canada Shield lakes often struggle when they fish the same way they do on their "home" waters. Pay attention to what the guide is TEACHING you, rather than learning his "spots".
Second, simply roll with whatever happens if this is a "one and done" trip. That is, fish for whatever you can get to bite. On the other hand, if you anticipate returning in future years, I encourage you to pick one or two target species and spend the time/effort to learn how to fish for them at that time of the year. Then, add to this base of knowledge/experience in future trips. First time anglers that try to do it all in their first fishing trip often end up spreading themselves so thin that they don't do as well as they hoped to.
Third, about ninety percent of the fishing equipment, that I actually use, fits into a milk crate. You don't need to spend a lot of money to acquire fishing tackle, unless you want to. If I could only take two lures with me to fish in NW Ontario, both lures would be jigs. The "other" ten percent of my fishing involves about ten tackle boxes that often don't leave the truck.
Last, I have noticed over the years that many anglers bring too heavy of a fishing rod for their walleye fishing. I mostly use a Light Power + Fast Action one piece fishing rod for my walleye, perch and bass fishing. If the fish run "bigger", I sometimes move up to a Medium Light Power + Xtra Fast Action rod. I need the sensitivity of the Action to feel the bottom and the bite, and the Power of the rod to set the hook and manage the fish during the fight.
Good fishing and tight lines!!