You can substitute the Guinness beer with other beer brands or chicken/beef broth. We prefer Guinness draught. The corned beef will not taste like beer.
If you don't like honey, you can substitute with an equal amount of brown sugar.
There are a two different types of corned beef brisket you can use for this recipe. There is point cut and flat cut. I prefer to use flat cut as it cooks more evenly compared to point cut. Point cut has more fat, producing more flavor, however, the flat cut will give you more beef + a bit of fat for flavor. It's the best of both worlds.