So, the Daiwa Coastal SV I've had ordered for a trip to fish off the coast of Florida has been backordered for 5 weeks now. If it doesn't arrive in time for my trip - I'm wondering about using a Tatula SV TW.  I haven't read anywhere it is compatible with salt, if I rinsed it off each day after using (3 days of fishing) what are the chances it would be okay - or am I ensuring it'll be ruined?  

Just make sure to thoroughly wash it with clean fresh water after each use in the salt. Maybe once you finish fishing it have it serviced and get some fresh lube in there.

I use to  fish the salt a few years ago with my Shimano fresh water reels, like 3 times a week, I'd rinse them off with a slow running hose. I did have them serviced every 2 months or so, never had any issues at all. 'm sure your SV will survive just fine.

The spool bearings are crbbs in the '17 Tats. I'd remove the handle, dragstar, spring and drag star nut, and washers, then smear some grease on the face of the outer driveshaft bearing to protect the race. Higher end Daiwas use Magseal in this spot. Grease will help keep water out. If you're more ambitious and are willing to remove the gear side cover, you can grease the frame and side cover edges where they meet to create a grease gasket. Don't block the weep holes. This entire exercise is a 10 minute job and will definitely help.