From what I've seen most hotels will offer a courtesy blocks of ten rooms that you aren't on the hook for if they aren't booked.
If you think you will need more than that but don't want to be on the hook for them or want to offer guests a choice between two hotels and still have the safety of a block, is there a reason not to get a second courtesy block at another hotel?
Are there rules against this or is it frowned upon??
Also is a year out too far to request courtesy blocks? I want to get a wedding website up before I send the STDs and would like that info provided.