We'd like to offer a .25% add on coupon to any new CD opened at a particular branch for a remodel Grand Opening. No changes will be made to the existing terms of our CD's so I don't need to do a new disclosure right?
Do we have to offer it at all locations?
This seems to simple and I feel like I'm missing something.
Any opinions?

Technically you can restrict the offer to select locations; it can be risky to do so if it gets customers' knickers in a knot.

Your transactional disclosure (the one you provide at account opening) should reflect the full rate and APY for the actual account.