Driveshaft removal

I have a 91 2wd and need to replace u-joints. The problem is I am used to older full size with the 4 bolts at each end of the driveshaft. This one has the bolts on the rear but the front is a slip yoke design. I have never removed one before. Do I just pull it out and do what I have to do? Will the seal stay put and intact? Will all the fluid come rushing out when I pull the yoke out?

Welcome to AF, some fluid will come out not much on level ground, the seal will not come out.