Just watched it.
Aside from Paul Rudd (I think Charlie Day would be a better choice), it was a fun movie for an old fart like me. There were a ton of memberberries which was somewhat distracting, but it's fun.
My biggest moments of tension:
Driving with the gunners seat. That's really dangerous.
When they were sitting over the mine. For safety sake, that should have been cut and boarded up.
Biggest issue: Gas in a car that has been sitting for decades.
Other than that, great send-off for Harold Ramis.