I can sum up the Pioneer Tavern in three words, "Absolutely No Character."
If you like drinking beer in an echoing room with cafeteria style tables then this place is for you.
I would have had a more enjoyable experience if I'd picked up a six pack from the grocery across the street and sat in the parking lot to drink.
On the other hand, people who go there like it...but then some folks drink Miller Lite in a can and see nothing wrong with that either.
I've been to the Pioneer Tavern several times, just because a friend of mine has a house out in Long Beach.
The best part about the Pioneer Tavern is the people. They've always been friendly. There isn't much in the line of food, but they usually have a decent selection of beer. There are pool tables, and a jukebox, and on any given night, there is a local or two or three hanging out.
So if you find yourself on the North end of Long Beach, check it out. Just make sure you eat before you go.