Once you arrive, there is little else to do but shop. You’ve seen the armor shop before, but with one more item. As for the weapons, if you plan on using Setzer for a while after it’s a requirement to buy him some Viper Darts .
Then restock on items and rest in the Inn. Afterwards, head to the Pub and speak with Setzer. After the scene, re-equip Setzer and Edgar, return to the overworld and go west to Darill’s tomb.