Your dates are safe for most of the facilities (trains, cable ways) to be open in the Wengen area. Too bad Männlichen will already be closed. You can go over to Grindelwald and ride the Eigergletscher Express then come down from there on the train back to Wengen.
Swissnomad posted this helpful list of closures the other day:
Wengen - Kleine Scheidegg closed Nov. 4 - 29
Männlichen closed Oct. 21 - Dec. 6
Grindelwald First closed Oct. 28 - Nov. 29
Harder Kulm closed for the season Dec. 2
Schynige Platte closed for the season Oct. 21
Good hikes/walks to consider include Grütschalp to Mürren, The Northface Trail, and the Lauterbrunnen Valley itself is a lovely amble. Over at Grindelwald we like to walk from First to Grosse Scheidegg and there is the immensely popular and therefore crowded hike to Bachalpsee,
I have not been to Zermatt for quite some time but there are a lot of good hikes. Rick Steves’ has a ton of info on your destinations. Do you have his Switzerland guide book?