I think a surprise a bad idea. The surprise should be to ask them what fantasy they want fulfilled. You must be willing to give them a judgment free safe space with which to tell you. If their fantasy does not completely scare you away then try to fulfill. If you find yourself unable to fulfill the fantasy you will have to work hard not to make your partner feel bad.

Sorry for the super late reply, but yes azure admin portals were down for quite a while.

That is a great quick overview. Also good advice to maybe bring Ina consultant/MSP for assistance if you are in over your head.