It is better to choose larger locations so that there is enough space for everyone and people have free space. Consider recreation areas and coffee breaks, a photo zone, and a meeting place for guests. It is worth noting that the lists of guests must also indicate the license plate numbers of the cars in which they will arrive, so that there are no misunderstandings.
All equipment must be in working order. Its power should be enough for the hall you have chosen. This can be checked during the first rehearsal of the event. Examine the questions that speakers might be asked, and even better, rehearse answers to “uncomfortable” questions from journalists.