I too was planning a trip for 2/2, and have found that in the US and Mexico it is not a problem with almost all hotels.
2 king beds with breakfast included is what we do. Middle range hotels are perfect. (Embassy Suites, Hyatt Place, Fairfield inn, Hampton Inn, etc)
Now in Europe I am having a difficult time finding anything that has 2/2. Some hotels have family rooms for more points.
I found a few that let me book 2/1 and I was thinking of calling in and requesting to add the 2nd child plus roll away bed. If they demand high $$, I'm just going to do AirBnb.
Please let me know of any properties that you have stayed in the past that were ok with 2/2 and you had a good experience.