Congrats Barry! Dues and registration are common, as is a contract that doesn't specify for how long they are paid. Make it explicit, ore expect to loose it. It is also common to request a lighter load the first year, to account for new course development. You can also negotiate a by out rate -- typically if you get a grant one or two courses per semester can be opted out of at whatever rate they pay adjuncts. Again, make it explicit or don't expect it.

congrats!

just to reiterate one of mespellwrong's points --- make it explicit --- i know someone who just went through this process, for some reason it took the final contract a while to finally show up for final signature - like 4 to 6 weeks - by which time the person had already committed, turned down another offer, and given notice with the institution where currently employed --- some of the things that had been agreed to verbally were not actually in the contract but at that point they had no leverage --- they got a, "don't worry, we're good for it, just bureaucratic oversight that those things were left out of the contract, but we'll take care of you..."  ----- it is tough because you don't want to be a dick, especially starting out --- but this has happened to two or three other people i know and generally, the institutions are not 'good for it' --- as soon as a new chair or department head or dean is brought in, they will be skeptical of honoring things not in contract, especially with the cuts happening so many places now --- so to whatever extent possible, if you don't have it in writing and you feel comfortable doing so, push the issue a little bit and get it in writing, in the contract --- 

You're so right about getting things in writing. I am lucky to have a fantastic boss where I teach but I know others who are not as fortunate and they have had the rug pulled out from underneath them.

If they're serious about hiring you, ask them to put it in writing.