I'm in the planning stages of replacing my bath tub. I'm planning to remove all the shower tiles and backer board as well. Will I be able to remove the tub without an access hole to get to the pipes? My main concern is the tub drain.
Are you in a slab? If you have a basement, access to the drain should be easy. Are you replacing the tub with another metal tub? If so, I'd recommend looking into getting it professionally refinished. I have used the home depot kits with nightmare results, but friends of mine have paid between 250-300 and had phenominal results from the pros, which I'll be doing down the road.
Depending on the age, the drain should be no problem. Most will come out using a tool called a castle wrench, which slips into the drain and is then turned using a pair of channel locks, screw driver or socket wrench. On some very old tubs I have had to 'tap' them out using and old chisel and hammer, and rarely have to actually use a reciprocating saw due to the drain being corroded to the tub shoe. The over-flow is usually very easy, 1-2 screws then pull the entire assembly out.