Metro/OC Bus

Hey everyone, I’m thinking of taking OC Bus 473 from UCI to the Tustin Metrolink Station to catch the IEOC 824 train at 6:45 PM. Are the 473 buses around that time usually packed or easy to get a seat? How’s the safety and vibe at Tustin Station in the evening (around 6:30–6:45 PM)? Just trying to get a feel for what to expect. Thanks in advance!