Shortly, we'll be in Paris for a couple of full days (not including arrival date). The plan on Day 1 is to go to the Louvre from our hotel on the left bank on Metro 1. After that, lunch in Le Marais on another metro train. From there, we might go somewhere else on the metro before heading back to the hotel for the night. We'll need at least 3-5 metro trips that day. Who knows, we might want to go up to Montmarte for the evening. It takes 5 metro trips to back the daily pass worthwhile. Do we get the daily pass?
Also, I have not even considered taking any buses. Is there a reason to consider taking buses around the core areas of Paris if the metro gets us just about anywhere we want even though we might have to walk a few blocks for the final part?