Traveling in Vancouver without a car

Flying to Vancouver in May 2026 and need transportation to EXchange Hotel Vancouver, 475 Howe Street. First time visitors to Vancouver and will arrive at the airport after 9:00 pm. We will be there for two days before cruising to Alaska. We plan on taking the hop on hop transportation but there are two options, bus or trolley. Any suggestions? Plan to visit Stanley Park, Coal Harbor, Granville Public Market and maybe Gastown. We are an older couple, physically in shape but always concerned about safety.