Walk-in shower: what actually makes it reliable
A walk-in shower is a system. Tile is just the finish layer.
Reliability comes from slope geometry, correct drain connection, and one compatible waterproofing system. Daily comfort comes from glass layout and ventilation. If glass coverage is too minimal, you will get water on the floor every day.
Common mistake
Minimal glass plus a strong shower head equals constant splash and wiping.
Best upgrade
A quiet strong fan with a timer and a true waterproofing system. That is real value.