The "Teatro Olimpico" is located in Piazza Matteotti 11 and you can access by the majestic portal on the northeast side of the square, at the beginning of Corso Palladio.
The ticket office is open everyday at the tourist office IAT, that is next to the main entrance of the theatre, at street number 12.
PARK STADIO is 1 km far from the theatre and is connected to Piazza Matteotti by free shuttle bus in working days;it has an affordable price € 2.90/car/ full day. More info https://www.svt.vi.it/it/centrobus
The railwaystation is not far from the Vicenza historical centre: you can reach the theatre with a pleasent walk of 15 minutes.( 1.4 km) There are several "AIM" city buses that reach Viale Giuriolo, very close to the theatre.( buses nr 1,2, 5 or 7).