Some rides are open there is a gaming room check that out
Park opens at 9am for those staying in one of the park-owned hotels and then to general public at 10am. Getting there before 10 allows you to get organized and in line to go into the ride part of the park.
Only place that's going to be open is the cafe. They wont let you in
The only place open before the actual park opens, is a cafe shop and a souvenir store. 30min is enough time for these 2 venues
The stores at entrance and stroller fast pass pick up open rides at 10am good to go a little early
A select few rides are open then all the rides are open at 10am. Not sure on which rides
Maybe coffee shops outside of legoland.
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