SMSG_INSTANCE_INFO as of 4.2

flags.cs

    [Flags]
    public enum InstanceInfoFlags
    {
        None = 0,
        TrialLevelCap = 0x40,
        TrialMoneyCap = 0x80,
    }

structure.cs

namespace Kamilla.WorldOfWarcraft.Latest.Parsers.Misc
{
    [WowPacketParser(WowOpcodes.SMSG_INSTANCE_INFO)]
    internal sealed class InstanceInfoParser : WowPacketParser
    {
        protected override void Parse()
        {
            var flags = (InstanceInfoFlags)Reader.ReadByte();
            Output.AppendLine("Flags: " + flags);

            Output.AppendLine("Last Weekly Reset: " + Reader.ReadUInt32().AsUnixTime());
            Output.AppendLine("Instance Difficulty: " + (RaidDifficulty)Reader.ReadUInt32());

            if ((flags & InstanceInfoFlags.TrialMoneyCap) != 0)
                Output.AppendLine("Trial Money Cap: " + new Money(Reader.ReadUInt32()));

            Output.AppendLine("Is On Tournament Realm: " + Reader.ReadByte());

            if ((flags & InstanceInfoFlags.TrialLevelCap) != 0)
                Output.AppendLine("Trial Level Cap: " + Reader.ReadUInt32());
        }
    }
}