Ask your escrow officer if you need a Notary (you should be calling and confirming the wire instructions by phone anyway, reminder not to call the number included With the wiring instructions to verify). I'd call sooner than later, and if you need a Notary, ask Escrow if they have an e-Notary and the cost. Free with some Escrows, pricey with others.
AAA or your bank usually have free or low cost Notary. Last point, with Disney direct I needed BOTH a notary and two witnesses present at the notarization - and this was without financing !