Depends on your interest,there's a free jazz concert this weekend at Travis Park,some well known groups will be playing,both Sat & Sun starts at noon I believe.
If you enjoy driving fast there's an indoor race track out on 410,between Ingram and Bandera. You can get discount tickets @ Costco,and although it won't cover the three races,it might be worth trying out.
Know you have the eight doggies now,but take the Rott to a dog park,get some fresh air for both of you.
Of course there's the old standby movies.
Hope you have a good time,whatever you decide to do.